[PATCH 09/12] HID: rmi: use scope-based cleanup for mode feature buffer

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

Manual memory allocation and release adds boilerplate and complicates
unwinding on error.

Switch to automatic scope-based memory cleanup for the temporary mode
configuration buffer.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/hid/hid-rmi.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index ad2ab6c13550..f1d52d55fe0d 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -144,17 +144,15 @@ static int rmi_set_page(struct hid_device *hdev, u8 page)
 
 static int rmi_set_mode(struct hid_device *hdev, u8 mode)
 {
-	int ret;
 	const u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode};
-	u8 *buf;
+	int ret;
 
-	buf = kmemdup(txbuf, sizeof(txbuf), GFP_KERNEL);
+	u8 *buf __free(kfree) = kmemdup(txbuf, sizeof(txbuf), GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
 	ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, buf,
 			sizeof(txbuf), HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
-	kfree(buf);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "unable to set rmi mode to %d (%d)\n", mode,
 			ret);

-- 
2.56.0.679.gc527c65306-goog