[media] mxl111sf: fix return value of mxl111sf_idac_config

mxl111sf_idac_config was incorrectly returning val instead of ret
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/mxl111sf-phy.c

@@ -332,7 +332,7 @@ int mxl111sf_idac_config(struct mxl111sf_state *state,
 
 	ret = mxl111sf_write_reg(state, V6_IDAC_SETTINGS_REG, val);
 
-	return val;
+	return ret;
 }
 
 /*