[PATCH] iio: pressure: bmp280: Use IS_ERR_OR_NULL() in bmp280_common_probe()

[Salah Triki <salah.triki@gmail.com>]

`devm_gpiod_get_optional()` may return non-NULL error pointer on failure.
Check its return value using `IS_ERR_OR_NULL()` and propagate the error if
necessary.

Signed-off-by: Salah Triki <salah.triki@gmail.com>
---
 drivers/iio/pressure/bmp280-core.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 74505c9ec1a0..2ac0188d2857 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -3213,11 +3213,13 @@ int bmp280_common_probe(struct device *dev,
 
 	/* Bring chip out of reset if there is an assigned GPIO line */
 	gpiod = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+
+	if (IS_ERR_OR_NULL(gpiod))
+		return dev_err_probe(dev, PTR_ERR(gpiod), "failed to get GPIO\n");
+
 	/* Deassert the signal */
-	if (gpiod) {
-		dev_info(dev, "release reset\n");
-		gpiod_set_value(gpiod, 0);
-	}
+	dev_info(dev, "release reset\n");
+	gpiod_set_value(gpiod, 0);
 
 	data->regmap = regmap;
 
-- 
2.43.0