leds: trigger: gpio: Refresh LED state after GPIO change

The new GPIO may have a different state than the old one.

Signed-off-by: Jan Kiszka <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Signed-off-by: Jacek Anaszewski <[e-mail]>

drivers/leds/trigger/ledtrig-gpio.c

···
 		if (gpio_data->gpio != 0)
 			free_irq(gpio_to_irq(gpio_data->gpio), led);
 		gpio_data->gpio = gpio;
+		/* After changing the GPIO, we need to update the LED. */
+		schedule_work(&gpio_data->work);
 	}
 
 	return ret ? ret : n;