net/tipc: fix missing destroy_workqueue() on error in tipc_crypto_start()

stable inclusion
from stable-5.10.37
commit faba97afdbb9d3ae4f4829603dc6513f0ad133b6
bugzilla: 51868
CVE: NA

--------------------------------

[ Upstream commit ac1db7ac ]

Add the missing destroy_workqueue() before return from
tipc_crypto_start() in the error handling case.

Fixes: 1ef6f7c9 ("tipc: add automatic session key exchange")
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

net/tipc/crypto.c

@@ -1485,6 +1485,8 @@ int tipc_crypto_start(struct tipc_crypto **crypto, struct net *net,
 	/* Allocate statistic structure */
 	c->stats = alloc_percpu_gfp(struct tipc_crypto_stats, GFP_ATOMIC);
 	if (!c->stats) {
+		if (c->wq)
+			destroy_workqueue(c->wq);
 		kfree_sensitive(c);
 		return -ENOMEM;
 	}