[PATCH -next] regulator: stm32-pwr: Fix return value check in stm32_pwr_regulator_probe()

[Wei Yongjun]

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

Fixes: 6cdae8173f67 ("regulator: Add support for stm32 power regulators")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/regulator/stm32-pwr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/stm32-pwr.c b/drivers/regulator/stm32-pwr.c
index e434b26d4c8b..d4b9d6accfad 100644
--- a/drivers/regulator/stm32-pwr.c
+++ b/drivers/regulator/stm32-pwr.c
@@ -140,9 +140,9 @@ static int stm32_pwr_regulator_probe(struct platform_device 
*pdev)
        int i, ret = 0;
 
        base = of_iomap(np, 0);
-       if (IS_ERR(base)) {
+       if (!base) {
                dev_err(&pdev->dev, "Unable to map IO memory\n");
-               return PTR_ERR(base);
+               return -ENOMEM;
        }
 
        config.dev = &pdev->dev;