crypto: ccp - Cleanup hash invocation calls

Cleanup the ahash digest invocations to check the init
return code and make use of the finup routine.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/ccp/ccp-crypto-sha.c

@@ -248,9 +248,13 @@ static int ccp_sha_finup(struct ahash_request *req)
 
 static int ccp_sha_digest(struct ahash_request *req)
 {
-	ccp_sha_init(req);
+	int ret;
 
-	return ccp_do_sha_update(req, req->nbytes, 1);
+	ret = ccp_sha_init(req);
+	if (ret)
+		return ret;
+
+	return ccp_sha_finup(req);
 }
 
 static int ccp_sha_setkey(struct crypto_ahash *tfm, const u8 *key,