[PATCH V2] clocksource/drivers/cadence_ttc: fix memory leak in ttc_setup_clockevent()

[Yu Kuai]

If clk_notifier_register() failed, ttc_setup_clockevent() will return
without freeing 'ttcce', which will leak memory.

Fixes: 70504f311d4b ("clocksource/drivers/cadence_ttc: Convert init function to 
return error")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Yu Kuai <yuku...@huawei.com>
Reviewed-by: Michal Simek <michal.si...@xilinx.com>
---
 drivers/clocksource/timer-cadence-ttc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clocksource/timer-cadence-ttc.c 
b/drivers/clocksource/timer-cadence-ttc.c
index 80e960602030..32b9560ce408 100644
--- a/drivers/clocksource/timer-cadence-ttc.c
+++ b/drivers/clocksource/timer-cadence-ttc.c
@@ -426,6 +426,7 @@ static int __init ttc_setup_clockevent(struct clk *clk,
                                    &ttcce->ttc.clk_rate_change_nb);
        if (err) {
                pr_warn("Unable to register clock notifier.\n");
+               kfree(ttcce);
                return err;
        }
 
-- 
2.25.4