V4L/DVB (4402): Fix budget-ci to use dvb_frontend_detach()

I missed one call during the dvb_attach() development.

Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
1 file changed