tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   61556703b610a104de324e4f061dc6cf7b218b46
commit: b7967b7919f0e3787d6e23424b5ad367fbb937e2 power: reset: at91-reset: 
convert reset in pointer to struct at91_reset
config: arm-randconfig-m031-20210206 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>

smatch warnings:
drivers/power/reset/at91-reset.c:260 at91_reset_probe() warn: 
'reset->rstc_base' not released on lines: 244.

vim +260 drivers/power/reset/at91-reset.c

6e64180a7c0219 Alexandre Belloni            2015-08-11  209  static int __init 
at91_reset_probe(struct platform_device *pdev)
ecfe64d8c55f8f Maxime Ripard                2014-07-02  210  {
ecfe64d8c55f8f Maxime Ripard                2014-07-02  211     const struct 
of_device_id *match;
ecfe64d8c55f8f Maxime Ripard                2014-07-02  212     struct 
device_node *np;
eacd8d09db7f45 Alexandre Belloni            2015-08-11  213     int ret, idx = 
0;
ecfe64d8c55f8f Maxime Ripard                2014-07-02  214  
b7967b7919f0e3 [email protected] 2020-01-21  215     reset = 
devm_kzalloc(&pdev->dev, sizeof(*reset), GFP_KERNEL);
b7967b7919f0e3 [email protected] 2020-01-21  216     if (!reset)
b7967b7919f0e3 [email protected] 2020-01-21  217             return 
-ENOMEM;
b7967b7919f0e3 [email protected] 2020-01-21  218  
b7967b7919f0e3 [email protected] 2020-01-21  219     
reset->rstc_base = of_iomap(pdev->dev.of_node, 0);
b7967b7919f0e3 [email protected] 2020-01-21  220     if 
(!reset->rstc_base) {
ecfe64d8c55f8f Maxime Ripard                2014-07-02  221             
dev_err(&pdev->dev, "Could not map reset controller address\n");
ecfe64d8c55f8f Maxime Ripard                2014-07-02  222             return 
-ENODEV;
ecfe64d8c55f8f Maxime Ripard                2014-07-02  223     }
ecfe64d8c55f8f Maxime Ripard                2014-07-02  224  
1ae25d626cfe7e Josh Wu                      2015-07-20  225     if 
(!of_device_is_compatible(pdev->dev.of_node, "atmel,sama5d3-rstc")) {
1ae25d626cfe7e Josh Wu                      2015-07-20  226             /* we 
need to shutdown the ddr controller, so get ramc base */
ecfe64d8c55f8f Maxime Ripard                2014-07-02  227             
for_each_matching_node(np, at91_ramc_of_match) {
b7967b7919f0e3 [email protected] 2020-01-21  228                     
reset->ramc_base[idx] = of_iomap(np, 0);
b7967b7919f0e3 [email protected] 2020-01-21  229                     
if (!reset->ramc_base[idx]) {
ecfe64d8c55f8f Maxime Ripard                2014-07-02  230                     
        dev_err(&pdev->dev, "Could not map ram controller address\n");
c4c0edfbf875a5 Julia Lawall                 2015-11-18  231                     
        of_node_put(np);
ecfe64d8c55f8f Maxime Ripard                2014-07-02  232                     
        return -ENODEV;

These error paths should probably unmap "reset->rstc_base"?

ecfe64d8c55f8f Maxime Ripard                2014-07-02  233                     
}
ecfe64d8c55f8f Maxime Ripard                2014-07-02  234                     
idx++;
ecfe64d8c55f8f Maxime Ripard                2014-07-02  235             }
1ae25d626cfe7e Josh Wu                      2015-07-20  236     }
ecfe64d8c55f8f Maxime Ripard                2014-07-02  237  
ecfe64d8c55f8f Maxime Ripard                2014-07-02  238     match = 
of_match_node(at91_reset_of_match, pdev->dev.of_node);
b7967b7919f0e3 [email protected] 2020-01-21  239     
reset->nb.notifier_call = match->data;
b7967b7919f0e3 [email protected] 2020-01-21  240     
reset->nb.priority = 192;
ecfe64d8c55f8f Maxime Ripard                2014-07-02  241  
b7967b7919f0e3 [email protected] 2020-01-21  242     reset->sclk = 
devm_clk_get(&pdev->dev, NULL);
b7967b7919f0e3 [email protected] 2020-01-21  243     if 
(IS_ERR(reset->sclk))
b7967b7919f0e3 [email protected] 2020-01-21  244             return 
PTR_ERR(reset->sclk);

Etc.  These should probably unmap reset->ramc_base[].

2b2c6148fe8510 Alexandre Belloni            2015-08-11  245  
b7967b7919f0e3 [email protected] 2020-01-21  246     ret = 
clk_prepare_enable(reset->sclk);
2b2c6148fe8510 Alexandre Belloni            2015-08-11  247     if (ret) {
2b2c6148fe8510 Alexandre Belloni            2015-08-11  248             
dev_err(&pdev->dev, "Could not enable slow clock\n");
2b2c6148fe8510 Alexandre Belloni            2015-08-11  249             return 
ret;
2b2c6148fe8510 Alexandre Belloni            2015-08-11  250     }
2b2c6148fe8510 Alexandre Belloni            2015-08-11  251  
b7967b7919f0e3 [email protected] 2020-01-21  252     ret = 
register_restart_handler(&reset->nb);
2b2c6148fe8510 Alexandre Belloni            2015-08-11  253     if (ret) {
b7967b7919f0e3 [email protected] 2020-01-21  254             
clk_disable_unprepare(reset->sclk);
ecfe64d8c55f8f Maxime Ripard                2014-07-02  255             return 
ret;
2b2c6148fe8510 Alexandre Belloni            2015-08-11  256     }
ecfe64d8c55f8f Maxime Ripard                2014-07-02  257  
ecfe64d8c55f8f Maxime Ripard                2014-07-02  258     
at91_reset_status(pdev);
ecfe64d8c55f8f Maxime Ripard                2014-07-02  259  
ecfe64d8c55f8f Maxime Ripard                2014-07-02 @260     return 0;
ecfe64d8c55f8f Maxime Ripard                2014-07-02  261  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

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