[media] drivers/media/video/zr364xx.c: add missing cleanup code

It seems just as necessary to free cam->vdev and cam in this error case as
in the next one.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed