V4L/DVB (10456): radio-mr800: place dev_err instead of dev_warn

There should be dev_err message if video_register_device() fails.
Correct this situation.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed