media: davinci: remove redundant assignment to pointer 'common'

The pointer 'common' is being assigned with a value that is never read,
the assignment is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/davinci/vpif_display.c

@@ -1225,7 +1225,6 @@ static int vpif_probe_complete(void)
 probe_out:
 	for (k = 0; k < j; k++) {
 		ch = vpif_obj.dev[k];
-		common = &ch->common[k];
 		video_unregister_device(&ch->video_dev);
 	}
 	return err;