[PATCH 4.9 017/134] Bluetooth: drop HCI device reference before return

[Greg Kroah-Hartman]

From: Pan Bian <bianpan2...@163.com>

[ Upstream commit 5a3ef03afe7e12982dc3b978f4c5077c907f7501 ]

Call hci_dev_put() to decrement reference count of HCI device hdev if
fails to duplicate memory.

Fixes: 0b26ab9dce74 ("Bluetooth: AMP: Handle Accept phylink command status evt")
Signed-off-by: Pan Bian <bianpan2...@163.com>
Signed-off-by: Marcel Holtmann <mar...@holtmann.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 net/bluetooth/a2mp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
index 242ef2abd0911..fcd819ffda108 100644
--- a/net/bluetooth/a2mp.c
+++ b/net/bluetooth/a2mp.c
@@ -519,6 +519,7 @@ static int a2mp_createphyslink_req(struct amp_mgr *mgr, 
struct sk_buff *skb,
                assoc = kmemdup(req->amp_assoc, assoc_len, GFP_KERNEL);
                if (!assoc) {
                        amp_ctrl_put(ctrl);
+                       hci_dev_put(hdev);
                        return -ENOMEM;
                }
 
-- 
2.27.0