rtc: rx8010: rename ret to err in rx8010_set_time()

All other functions in this driver use 'err' for integer return values.
Do the same in rx8010_set_time() for consistency.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200914154601.32245-7-brgl@bgdev.pl

drivers/rtc/rtc-rx8010.c

@@ -140,7 +140,7 @@ static int rx8010_set_time(struct device *dev, struct rtc_time *dt)
 {
 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
 	u8 date[7];
-	int ctrl, flagreg, ret;
+	int ctrl, flagreg, err;
 
 	if ((dt->tm_year < 100) || (dt->tm_year > 199))
 		return -EINVAL;
@@ -150,10 +150,10 @@ static int rx8010_set_time(struct device *dev, struct rtc_time *dt)
 	if (ctrl < 0)
 		return ctrl;
 	rx8010->ctrlreg = ctrl | RX8010_CTRL_STOP;
-	ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
+	err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
 					rx8010->ctrlreg);
-	if (ret < 0)
-		return ret;
+	if (err < 0)
+		return err;
 
 	date[RX8010_SEC - RX8010_SEC] = bin2bcd(dt->tm_sec);
 	date[RX8010_MIN - RX8010_SEC] = bin2bcd(dt->tm_min);
@@ -163,27 +163,27 @@ static int rx8010_set_time(struct device *dev, struct rtc_time *dt)
 	date[RX8010_YEAR - RX8010_SEC] = bin2bcd(dt->tm_year - 100);
 	date[RX8010_WDAY - RX8010_SEC] = bin2bcd(1 << dt->tm_wday);
 
-	ret = i2c_smbus_write_i2c_block_data(rx8010->client,
+	err = i2c_smbus_write_i2c_block_data(rx8010->client,
 					     RX8010_SEC, 7, date);
-	if (ret < 0)
-		return ret;
+	if (err < 0)
+		return err;
 
 	/* clear STOP bit after changing clock/calendar */
 	ctrl = i2c_smbus_read_byte_data(rx8010->client, RX8010_CTRL);
 	if (ctrl < 0)
 		return ctrl;
 	rx8010->ctrlreg = ctrl & ~RX8010_CTRL_STOP;
-	ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
+	err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
 					rx8010->ctrlreg);
-	if (ret < 0)
-		return ret;
+	if (err < 0)
+		return err;
 
 	flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
 	if (flagreg < 0)
 		return flagreg;
 
 	if (flagreg & RX8010_FLAG_VLF)
-		ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG,
+		err = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG,
 						flagreg & ~RX8010_FLAG_VLF);
 
 	return 0;