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-lp3943.c b/drivers/gpio/gpio-lp3943.c
index a0341c9..6bbdad8 100644
--- a/drivers/gpio/gpio-lp3943.c
+++ b/drivers/gpio/gpio-lp3943.c
@@ -216,7 +216,8 @@
 {
 	struct lp3943_gpio *lp3943_gpio = platform_get_drvdata(pdev);
 
-	return gpiochip_remove(&lp3943_gpio->chip);
+	gpiochip_remove(&lp3943_gpio->chip);
+	return 0;
 }
 
 static const struct of_device_id lp3943_gpio_of_match[] = {