linux-wandboard

[media] dvb: unlock on error in dvb_ca_en50221_io_do_ioctl()

We recently pushed the locking down into this function, but there was
an error path where the unlock was missed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>