crypto: sun8i-ss - fix result memory leak on error path

stable inclusion
from stable-5.10.37
commit 1f12aaf07f61122cf5074d29714ee26f8d44b0e7
bugzilla: 51868
CVE: NA

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

[ Upstream commit 1dbc6a1e ]

This patch fixes a memory leak on an error path.

Fixes: d9b45418 ("crypto: sun8i-ss - support hash algorithms")
Reported-by: Nkernel test robot <lkp@intel.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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>

drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c

@@ -437,8 +437,8 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
 	kfree(pad);
 
 	memcpy(areq->result, result, algt->alg.hash.halg.digestsize);
-	kfree(result);
 theend:
+	kfree(result);
 	crypto_finalize_hash_request(engine, breq, err);
 	return 0;
 }