[PATCH -next] regulator: rt4831: Fix return value check in rt4831_regulator_probe()

['Wei Yongjun]

From: Wei Yongjun <weiyongj...@huawei.com>

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

Fixes: 9351ab8b0cb6 ("regulator: rt4831: Adds support for Richtek RT4831 DSV 
regulator")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/regulator/rt4831-regulator.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/rt4831-regulator.c 
b/drivers/regulator/rt4831-regulator.c
index 3d4695ded629..e3aaac90d238 100644
--- a/drivers/regulator/rt4831-regulator.c
+++ b/drivers/regulator/rt4831-regulator.c
@@ -153,9 +153,9 @@ static int rt4831_regulator_probe(struct platform_device 
*pdev)
        int i, ret;
 
        regmap = dev_get_regmap(pdev->dev.parent, NULL);
-       if (IS_ERR(regmap)) {
+       if (!regmap) {
                dev_err(&pdev->dev, "Failed to init regmap\n");
-               return PTR_ERR(regmap);
+               return -ENODEV;
        }
 
        /* Configure DSV mode to normal by default */