driver:gpio remove all usage of gpio_remove retval in driver

this remove all reference to gpio_remove retval in all driver
except pinctrl and gpio. the same thing is done for gpio and
pinctrl in two different patches.

Signed-off-by: Abdoulaye Berthe <berthe.ab@gmail.com>
Acked-by: Michael Büsch <m@bues.ch>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/mips/txx9/generic/setup.c

@@ -789,11 +789,11 @@ void __init txx9_iocled_init(unsigned long baseaddr,
 	if (platform_device_add(pdev))
 		goto out_pdev;
 	return;
+
 out_pdev:
 	platform_device_put(pdev);
 out_gpio:
-	if (gpiochip_remove(&iocled->chip))
-		return;
+	gpiochip_remove(&iocled->chip);
 out_unmap:
 	iounmap(iocled->mmioaddr);
 out_free: