iio: light: isl76682: remove unreachable code

The function isl76682_read_raw cannot execute return -EINVAL up to 145
lines, delete the invalid code.

drivers/iio/light/isl76682.c:145 isl76682_read_raw() warn: ignoring unreachable code.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7698Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20231208021715.32450-1-jiapeng.chong@linux.alibaba.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/light/isl76682.c

@@ -142,7 +142,6 @@ static int isl76682_read_raw(struct iio_dev *indio_dev,
 		default:
 			return -EINVAL;
 		}
-		return -EINVAL;
 	case IIO_CHAN_INFO_SCALE:
 		for (i = 0; i < ARRAY_SIZE(isl76682_range_table); i++) {
 			if (chip->range != isl76682_range_table[i].range)