reset: gpio: check the return value of gpiod_set_value_cansleep()

gpiod_set_value_cansleep() now returns an integer and can indicate
failures. Propagate the return value to the caller of the reset API.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

Author: Bartosz Golaszewski

drivers/reset/reset-gpio.c

@@ -22,19 +22,15 @@ static int reset_gpio_assert(struct reset_controller_dev *rc, unsigned long id)
 {
 	struct reset_gpio_priv *priv = rc_to_reset_gpio(rc);
 
-	gpiod_set_value_cansleep(priv->reset, 1);
-
-	return 0;
+	return gpiod_set_value_cansleep(priv->reset, 1);
 }
 
 static int reset_gpio_deassert(struct reset_controller_dev *rc,
 			       unsigned long id)
 {
 	struct reset_gpio_priv *priv = rc_to_reset_gpio(rc);
 
-	gpiod_set_value_cansleep(priv->reset, 0);
-
-	return 0;
+	return gpiod_set_value_cansleep(priv->reset, 0);
 }
 
 static int reset_gpio_status(struct reset_controller_dev *rc, unsigned long id)