gpiolib: of: Correct error handling in of_get_named_gpiod_flags

of_get_named_gpiod_flags fails with -EPROBE_DEFER in cases
where the gpio chip is available and the GPIO translation fails.

This causes drivers to be re-probed erroneusly, and hides the
real problem(i.e. the GPIO number being out of range).

Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Hans Holmberg <hans.holmberg@intel.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

(cherry picked from commit 7b8792bb)
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

drivers/gpio/gpiolib-of.c

@@ -51,7 +51,7 @@ static int of_gpiochip_find_and_xlate(struct gpio_chip *gc, void *data)
 		return true;
 	 }
 
-	gg_data->out_gpio = ret + gc->base;
+	gg_data->out_gpio = gpio_to_desc(ret + gc->base);
 	return true;
 }