drivers:iio:accel:mma8452: removed unwanted return statements

Removed unwanted return statements from the function
mma8452_set_freefall_mode.

Signed-off-by: Bijosh Thykkoottathil <bijosh.t@hotmail.com>
Acked-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 9ba2f7f..d41e1b5 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -634,11 +634,7 @@
 		val |= MMA8452_FF_MT_CFG_OAE;
 	}
 
-	val = mma8452_change_config(data, chip->ev_cfg, val);
-	if (val)
-		return val;
-
-	return 0;
+	return mma8452_change_config(data, chip->ev_cfg, val);
 }
 
 static int mma8452_set_hp_filter_frequency(struct mma8452_data *data,