[media] az6027: fix compiler warnings

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/az6027.c

@@ -782,7 +782,6 @@ static int az6027_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
 {
 
 	u8 buf;
-	int ret;
 	struct dvb_usb_adapter *adap = fe->dvb->priv;
 
 	struct i2c_msg i2c_msg = {
@@ -800,17 +799,17 @@ static int az6027_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
 	switch (voltage) {
 	case SEC_VOLTAGE_13:
 		buf = 1;
-		ret = i2c_transfer(&adap->dev->i2c_adap, &i2c_msg, 1);
+		i2c_transfer(&adap->dev->i2c_adap, &i2c_msg, 1);
 		break;
 
 	case SEC_VOLTAGE_18:
 		buf = 2;
-		ret = i2c_transfer(&adap->dev->i2c_adap, &i2c_msg, 1);
+		i2c_transfer(&adap->dev->i2c_adap, &i2c_msg, 1);
 		break;
 
 	case SEC_VOLTAGE_OFF:
 		buf = 0;
-		ret = i2c_transfer(&adap->dev->i2c_adap, &i2c_msg, 1);
+		i2c_transfer(&adap->dev->i2c_adap, &i2c_msg, 1);
 		break;
 
 	default:
@@ -954,7 +953,6 @@ static int az6027_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int n
 {
 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
 	int i = 0, j = 0, len = 0;
-	int ret;
 	u16 index;
 	u16 value;
 	int length;
@@ -990,7 +988,7 @@ static int az6027_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int n
 				index = (((msg[i].buf[0] << 8) & 0xff00) | (msg[i].buf[1] & 0x00ff));
 				value = msg[i].addr + (msg[i].len << 8);
 				length = msg[i + 1].len + 6;
-				ret = az6027_usb_in_op(d, req, value, index, data, length);
+				az6027_usb_in_op(d, req, value, index, data, length);
 				len = msg[i + 1].len;
 				for (j = 0; j < len; j++)
 					msg[i + 1].buf[j] = data[j + 5];
@@ -1017,7 +1015,7 @@ static int az6027_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int n
 				index = 0x0;
 				value = msg[i].addr;
 				length = msg[i].len + 6;
-				ret = az6027_usb_in_op(d, req, value, index, data, length);
+				az6027_usb_in_op(d, req, value, index, data, length);
 				len = msg[i].len;
 				for (j = 0; j < len; j++)
 					msg[i].buf[j] = data[j + 5];