[PATCH 2/2] Bluetooth: btintel: fix use after free problem in btintel_ppag_callback()

[Su Hui]

Clang static checker(scan-build) warning:
drivers/bluetooth/btintel.c:1369:8: Use of memory after it is freed.

'p' is equal to 'buffer.pointer', using of 'p->type' after releasing
'buffer.pointer' causes this use after free problem.
Change the order of releasing buffer.pointer to fix this problem.

Fixes: c585a92b2f9c ("Bluetooth: btintel: Set Per Platform Antenna Gain(PPAG)")
Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
---
 drivers/bluetooth/btintel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index f1c101dc0c28..d94a8ccd1428 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -1364,9 +1364,9 @@ static acpi_status btintel_ppag_callback(acpi_handle handle, u32 lvl, void *data
 	ppag = (struct btintel_ppag *)data;
 
 	if (p->type != ACPI_TYPE_PACKAGE || p->package.count != 2) {
-		kfree(buffer.pointer);
 		bt_dev_warn(hdev, "PPAG-BT: Invalid object type: %d or package count: %d",
 			    p->type, p->package.count);
+		kfree(buffer.pointer);
 		ppag->status = AE_ERROR;
 		return AE_ERROR;
 	}
-- 
2.30.2