[PATCH v2 next 5/5] iio: sca3000: use guard(mutex) to simplify return paths

[Harshit Mogalapalli]

Switch sca3000_stop_all_interrupts() to use guard(mutex).

Suggested-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@xxxxxxxxxx>
---
 drivers/iio/accel/sca3000.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/iio/accel/sca3000.c b/drivers/iio/accel/sca3000.c
index 989074de18b4..1fccc493a0d7 100644
--- a/drivers/iio/accel/sca3000.c
+++ b/drivers/iio/accel/sca3000.c
@@ -7,6 +7,7 @@
  * See industrialio/accels/sca3000.h for comments.
  */
 
+#include <linux/cleanup.h>
 #include <linux/interrupt.h>
 #include <linux/fs.h>
 #include <linux/device.h>
@@ -1441,18 +1442,17 @@ static int sca3000_stop_all_interrupts(struct sca3000_state *st)
 {
 	int ret;
 
-	mutex_lock(&st->lock);
+	guard(mutex)(&st->lock);
+
 	ret = sca3000_read_data_short(st, SCA3000_REG_INT_MASK_ADDR, 1);
 	if (ret)
-		goto error_ret;
-	ret = sca3000_write_reg(st, SCA3000_REG_INT_MASK_ADDR,
-				(st->rx[0] &
+		return ret;
+
+	return sca3000_write_reg(st, SCA3000_REG_INT_MASK_ADDR,
+				 (st->rx[0] &
 				 ~(SCA3000_REG_INT_MASK_RING_THREE_QUARTER |
 				   SCA3000_REG_INT_MASK_RING_HALF |
 				   SCA3000_REG_INT_MASK_ALL_INTS)));
-error_ret:
-	mutex_unlock(&st->lock);
-	return ret;
 }
 
 static void sca3000_disable_interrupts(void *data)
-- 
2.47.3