From: Wang Qing <wangqing@vivo.com>
Date: Mon, 14 Feb 2022 18:01:56 -0800
Subject: Bluetooth: assign len after null check
Patch-mainline: v5.17-rc7
Git-commit: 2e8ecb4bbc13d4752d64a9f8f5512d59125cab25
References: jsc#PED-1407

len should be assigned after a null check

Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 net/bluetooth/mgmt_util.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/bluetooth/mgmt_util.c
+++ b/net/bluetooth/mgmt_util.c
@@ -77,11 +77,12 @@ int mgmt_send_event_skb(unsigned short c
 {
 	struct hci_dev *hdev;
 	struct mgmt_hdr *hdr;
-	int len = skb->len;
+	int len;
 
 	if (!skb)
 		return -EINVAL;
 
+	len = skb->len;
 	hdev = bt_cb(skb)->mgmt.hdev;
 
 	/* Time stamp */