gpio: remove all usage of gpio_remove retval in driver/gpio

Signed-off-by: abdoulaye berthe <berthe.ab@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c
index b50fe12..30884fb 100644
--- a/drivers/gpio/gpio-syscon.c
+++ b/drivers/gpio/gpio-syscon.c
@@ -172,7 +172,8 @@
 {
 	struct syscon_gpio_priv *priv = platform_get_drvdata(pdev);
 
-	return gpiochip_remove(&priv->chip);
+	gpiochip_remove(&priv->chip);
+	return 0;
 }
 
 static struct platform_driver syscon_gpio_driver = {