[media] cx231xx: enforce check for graph creation

If the graph creation fails, don't register the device.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-09-04 16:07:03 -03:00
commit ab232e46bf