staging:iio:light: Add some missing brackets to make sure code works as intended.

Note this is not a bug due to the fact the region cannot be reached without the sanity check passing. The autobuilder reported it as missaligned code which is kind of true as well.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Roberta Dobrescu <roberta.dobrescu@gmail.com>

drivers/staging/iio/light/isl29018.c

@@ -369,12 +369,13 @@ static int isl29018_write_raw(struct iio_dev *indio_dev,
 		}
 		break;
 	case IIO_CHAN_INFO_INT_TIME:
-		if (chan->type == IIO_LIGHT)
+		if (chan->type == IIO_LIGHT) {
 			if (val != 0) {
 				mutex_unlock(&chip->lock);
 				return -EINVAL;
 			}
 			ret = isl29018_set_integration_time(chip, val2);
+		}
 		break;
 	case IIO_CHAN_INFO_SCALE:
 		if (chan->type == IIO_LIGHT)