gpio: vr41xx: fix up errorpath on probe()
gpio: vr41xx: fix up errorpath on probe()

The driver was not checking the return value from gpiochip_add()
properly, so add a bail-out check.

Reported-by: Rickard Strandqvist <b2870f70e324b62b54eced4cf50284b23ec5baab@spectrumdigital.se>
Signed-off-by: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs