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-tps6586x.c b/drivers/gpio/gpio-tps6586x.c
index a69fbea..9c9238e 100644
--- a/drivers/gpio/gpio-tps6586x.c
+++ b/drivers/gpio/gpio-tps6586x.c
@@ -137,7 +137,8 @@
 {
 	struct tps6586x_gpio *tps6586x_gpio = platform_get_drvdata(pdev);
 
-	return gpiochip_remove(&tps6586x_gpio->gpio_chip);
+	gpiochip_remove(&tps6586x_gpio->gpio_chip);
+	return 0;
 }
 
 static struct platform_driver tps6586x_gpio_driver = {