[PATCH] memory: jz4780-nemc: Fix return value check in jz4780_nemc_probe()

[Wei Yongjun]

In case of error, the function devm_ioremap() returns NULL pointer not
ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Fixes: f046e4a3f0b9 ("memory: jz4780_nemc: Only request IO memory the driver 
will use")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/memory/jz4780-nemc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/jz4780-nemc.c b/drivers/memory/jz4780-nemc.c
index 3ec5cb0fce1e..608ae925e641 100644
--- a/drivers/memory/jz4780-nemc.c
+++ b/drivers/memory/jz4780-nemc.c
@@ -304,9 +304,9 @@ static int jz4780_nemc_probe(struct platform_device *pdev)
        }
 
        nemc->base = devm_ioremap(dev, res->start, NEMC_REG_LEN);
-       if (IS_ERR(nemc->base)) {
+       if (!nemc->base) {
                dev_err(dev, "failed to get I/O memory\n");
-               return PTR_ERR(nemc->base);
+               return -ENOMEM;
        }
 
        writel(0, nemc->base + NEMC_NFCSR);