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>

drivers/media/dvb/ttpci/budget-ci.c

@@ -1046,8 +1046,7 @@ static void frontend_init(struct budget_ci *budget_ci)
 			budget_ci->budget.dvb_frontend->ops.dishnetwork_send_legacy_command = NULL;
 			if (dvb_attach(lnbp21_attach, budget_ci->budget.dvb_frontend, &budget_ci->budget.i2c_adap, LNBP21_LLC, 0) == NULL) {
 				printk("%s: No LNBP21 found!\n", __FUNCTION__);
-				if (budget_ci->budget.dvb_frontend->ops.release)
-					budget_ci->budget.dvb_frontend->ops.release(budget_ci->budget.dvb_frontend);
+				dvb_frontend_detach(budget_ci->budget.dvb_frontend);
 				budget_ci->budget.dvb_frontend = NULL;
 			}
 		}