[PATCH 5.9 737/757] brcm80211: fix possible memleak in brcmf_proto_msgbuf_attach

[Greg Kroah-Hartman]

From: Wang Yufen <wangyufen@xxxxxxxxxx>

[ Upstream commit 6c151410d5b57e6bb0d91a735ac511459539a7bf ]

When brcmf_proto_msgbuf_attach fail and msgbuf->txflow_wq != NULL,
we should destroy the workqueue.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wang Yufen <wangyufen@xxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1595237765-66238-1-git-send-email-wangyufen@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
index f1a20db8daab9..bfddb851e386e 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
@@ -1620,6 +1620,8 @@ int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
 					  BRCMF_TX_IOCTL_MAX_MSG_SIZE,
 					  msgbuf->ioctbuf,
 					  msgbuf->ioctbuf_handle);
+		if (msgbuf->txflow_wq)
+			destroy_workqueue(msgbuf->txflow_wq);
 		kfree(msgbuf);
 	}
 	return -ENOMEM;
-- 
2.25.1