rtc: rx8010: drop unnecessary initialization

The 'err' local variable in rx8010_init_client() doesn't need to be
initialized.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200914154601.32245-9-brgl@bgdev.pl

drivers/rtc/rtc-rx8010.c

@@ -194,7 +194,7 @@ static int rx8010_init_client(struct i2c_client *client)
 {
 	struct rx8010_data *rx8010 = i2c_get_clientdata(client);
 	u8 ctrl[2];
-	int need_clear = 0, err = 0;
+	int need_clear = 0, err;
 
 	/* Initialize reserved registers as specified in datasheet */
 	err = i2c_smbus_write_byte_data(client, RX8010_RESV17, 0xD8);