[PATCH] media: st-mipid02: add a check for devm_gpiod_get_optional

[Chuhong Yuan]

mipid02_probe misses a check for devm_gpiod_get_optional and may miss
the failure.
Add a check to fix the problem.

Signed-off-by: Chuhong Yuan <hsleste...@gmail.com>
---
 drivers/media/i2c/st-mipid02.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/i2c/st-mipid02.c b/drivers/media/i2c/st-mipid02.c
index 81285b8d5cfb..d38e888b0a43 100644
--- a/drivers/media/i2c/st-mipid02.c
+++ b/drivers/media/i2c/st-mipid02.c
@@ -971,6 +971,9 @@ static int mipid02_probe(struct i2c_client *client)
        bridge->reset_gpio = devm_gpiod_get_optional(dev, "reset",
                                                     GPIOD_OUT_HIGH);
 
+       if (IS_ERR(bridge->reset_gpio))
+               return PTR_ERR(bridge->reset_gpio);
+
        ret = mipid02_get_regulators(bridge);
        if (ret) {
                dev_err(dev, "failed to get regulators %d", ret);
-- 
2.20.1