i2c: rcar_i2c: Don't mask errors with EREMOTEIO at rcar_i2c_xfer

Fix rcar_i2c_xfer return value, previously it was always returning
-EREMOTEIO when dealing with errors from calls to the read/write
functions.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

drivers/i2c/rcar_i2c.c

@@ -221,7 +221,7 @@ static int rcar_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, int nmsgs)
 			ret = rcar_i2c_write_common(dev, msg);
 
 		if (ret)
-			return -EREMOTEIO;
+			return ret;
 	}
 
 	return ret;