media: staging: media: sun6i-isp: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.c

@@ -493,7 +493,7 @@ error_resources:
 	return ret;
 }
 
-static int sun6i_isp_remove(struct platform_device *platform_dev)
+static void sun6i_isp_remove(struct platform_device *platform_dev)
 {
 	struct sun6i_isp_device *isp_dev = platform_get_drvdata(platform_dev);
 
@@ -503,8 +503,6 @@ static int sun6i_isp_remove(struct platform_device *platform_dev)
 	sun6i_isp_v4l2_cleanup(isp_dev);
 	sun6i_isp_tables_cleanup(isp_dev);
 	sun6i_isp_resources_cleanup(isp_dev);
-
-	return 0;
 }
 
 /*
@@ -540,7 +538,7 @@ MODULE_DEVICE_TABLE(of, sun6i_isp_of_match);
 
 static struct platform_driver sun6i_isp_platform_driver = {
 	.probe	= sun6i_isp_probe,
-	.remove	= sun6i_isp_remove,
+	.remove_new = sun6i_isp_remove,
 	.driver	= {
 		.name		= SUN6I_ISP_NAME,
 		.of_match_table	= of_match_ptr(sun6i_isp_of_match),