media: dvb-frontends/stv0910: remove unneeded check/call to get_if_freq

The result (if any) isn't used anywhere besides being assigned to a local
variable (and the only current companion stv6111 doesn't even implement
get_if_frequency()), thus remove the ptr check and the call, and also
remove the now unused iffreq variable.
Reported-by: Richard Scobie <rascobie@slingshot.co.nz>
Cc: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <rascobie@slingshot.co.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/dvb-frontends/stv0910.c

@@ -1273,14 +1273,11 @@ static int set_parameters(struct dvb_frontend *fe)
 {
 	int stat = 0;
 	struct stv *state = fe->demodulator_priv;
-	u32 iffreq;
 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 
 	stop(state);
 	if (fe->ops.tuner_ops.set_params)
 		fe->ops.tuner_ops.set_params(fe);
-	if (fe->ops.tuner_ops.get_if_frequency)
-		fe->ops.tuner_ops.get_if_frequency(fe, &iffreq);
 	state->symbol_rate = p->symbol_rate;
 	stat = start(state, p);
 	return stat;