ACPI / gpio: add missing fwnode_handle_put() in acpi_gpiochip_scan_gpios()

fwnode_handle_put() should be used when terminating
device_for_each_child_node() iteration with break or
return to prevent stale device node references from
being left behind.

This is detected by Coccinelle semantic patch.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpiolib-acpi.c

@@ -922,6 +922,7 @@ static void acpi_gpiochip_scan_gpios(struct acpi_gpio_chip *achip)
 		ret = gpiod_hog(desc, name, lflags, dflags);
 		if (ret) {
 			dev_err(chip->parent, "Failed to hog GPIO\n");
+			fwnode_handle_put(fwnode);
 			return;
 		}
 	}