[PATCH -next] gpio: mlxbf2: fix return value check in mlxbf2_gpio_get_lock_res()

[Wei Yongjun <weiyongjun1@xxxxxxxxxx>]

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.

Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 drivers/gpio/gpio-mlxbf2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c
index 240b488609ac..fca6a50d9308 100644
--- a/drivers/gpio/gpio-mlxbf2.c
+++ b/drivers/gpio/gpio-mlxbf2.c
@@ -109,8 +109,8 @@ static int mlxbf2_gpio_get_lock_res(struct platform_device *pdev)
 	}
 
 	yu_arm_gpio_lock_param.io = devm_ioremap(dev, res->start, size);
-	if (IS_ERR(yu_arm_gpio_lock_param.io))
-		ret = PTR_ERR(yu_arm_gpio_lock_param.io);
+	if (!yu_arm_gpio_lock_param.io)
+		ret = -ENOMEM;
 
 exit:
 	mutex_unlock(yu_arm_gpio_lock_param.lock);