iio: sca3000: Fix missing return in switch

The IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY case is missing a return and will fall through to the default case and errorenously return -EINVAL.

Fix this by adding in missing *return ret*.

Fixes 626f971b5b07 ("staging:iio:accel:sca3000 Add write support to the low pass filter control")

Reported-by Jonathan Cameron <[email protected]>

Signed-off-by Gustavo A. R. Silva <[email protected]>

---
 drivers/iio/accel/sca3000.c | 1 +
 1 file changed, 1 insertion(+)

drivers/iio/accel/sca3000.c +1 -0

index 4dceb75..4964561 100644
@@ -797,6 +797,7 @@ static int sca3000_write_raw(struct iio_dev *indio_dev,
 		mutex_lock(&st->lock);
 		ret = sca3000_write_3db_freq(st, val);
 		mutex_unlock(&st->lock);
+		return ret;
 	default:
 		return -EINVAL;
 	}