[media] Correct error code from -ENOMEM to -EINVAL.

Make sure the return value is set in all cases

>From 9b38a5c9878b5e4be2899ae291c4524f5f5fc218 Mon Sep 17 00:00:00 2001

Signed-off-by: Hans Petter Selasky <hselasky@c2i.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>