gpio: virtio: remove unneeded semicolon

Eliminate the following coccicheck warning:
./drivers/gpio/gpio-virtio.c:437:2-3: Unneeded semicolon
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

drivers/gpio/gpio-virtio.c

@@ -434,7 +434,7 @@ static void virtio_gpio_event_vq(struct virtqueue *vq)
 		ret = generic_handle_domain_irq(vgpio->gc.irq.domain, gpio);
 		if (ret)
 			dev_err(dev, "failed to handle interrupt: %d\n", ret);
-	};
+	}
 }
 
 static void virtio_gpio_request_vq(struct virtqueue *vq)