V4L/DVB (10199): uvcvideo: Fix GET_DEF failure detection.

Commit 44f0079ec74330b457d990072c13cbe28b0f1abf erroneously considers all
GET_DEF requests as unsuccessful. Fix this by checking the request return
value.

Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed