crypto: ccp - Release all allocated memory if sha type is invalid

mainline inclusion
from mainline-v5.5
commit 128c66429247add5128c03dc1e144ca56f05a4e2
category: bugfix
bugzilla: 13690
CVE: CVE-2019-18808

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

Release all allocated memory if sha type is invalid:
In ccp_run_sha_cmd, if the type of sha is invalid, the allocated
hmac_buf should be released.

v2: fix the goto.
Signed-off-by: NNavid Emamdoost <navid.emamdoost@gmail.com>
Acked-by: NGary R Hook <gary.hook@amd.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NJason Yan <yanaijie@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/crypto/ccp/ccp-ops.c

@@ -1793,8 +1793,9 @@ static int ccp_run_sha_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
 			       LSB_ITEM_SIZE);
 			break;
 		default:
+			kfree(hmac_buf);
 			ret = -EINVAL;
-			goto e_ctx;
+			goto e_data;
 		}
 
 		memset(&hmac_cmd, 0, sizeof(hmac_cmd));