crypto: rsa-pkcs1pad - Use akcipher_request_complete

Use the akcipher_request_complete helper instead of calling the
completion function directly.  In fact the previous code was buggy
in that EINPROGRESS was never passed back to the original caller.

Fixes: 3d5b1ecd ("crypto: rsa - RSA padding algorithm")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/rsa-pkcs1pad.c

@@ -214,16 +214,14 @@ static void pkcs1pad_encrypt_sign_complete_cb(
 		struct crypto_async_request *child_async_req, int err)
 {
 	struct akcipher_request *req = child_async_req->data;
-	struct crypto_async_request async_req;
 
 	if (err == -EINPROGRESS)
-		return;
+		goto out;
+
+	err = pkcs1pad_encrypt_sign_complete(req, err);
 
-	async_req.data = req->base.data;
-	async_req.tfm = crypto_akcipher_tfm(crypto_akcipher_reqtfm(req));
-	async_req.flags = child_async_req->flags;
-	req->base.complete(&async_req,
-			pkcs1pad_encrypt_sign_complete(req, err));
+out:
+	akcipher_request_complete(req, err);
 }
 
 static int pkcs1pad_encrypt(struct akcipher_request *req)
@@ -332,15 +330,14 @@ static void pkcs1pad_decrypt_complete_cb(
 		struct crypto_async_request *child_async_req, int err)
 {
 	struct akcipher_request *req = child_async_req->data;
-	struct crypto_async_request async_req;
 
 	if (err == -EINPROGRESS)
-		return;
+		goto out;
+
+	err = pkcs1pad_decrypt_complete(req, err);
 
-	async_req.data = req->base.data;
-	async_req.tfm = crypto_akcipher_tfm(crypto_akcipher_reqtfm(req));
-	async_req.flags = child_async_req->flags;
-	req->base.complete(&async_req, pkcs1pad_decrypt_complete(req, err));
+out:
+	akcipher_request_complete(req, err);
 }
 
 static int pkcs1pad_decrypt(struct akcipher_request *req)
@@ -513,15 +510,14 @@ static void pkcs1pad_verify_complete_cb(
 		struct crypto_async_request *child_async_req, int err)
 {
 	struct akcipher_request *req = child_async_req->data;
-	struct crypto_async_request async_req;
 
 	if (err == -EINPROGRESS)
-		return;
+		goto out;
 
-	async_req.data = req->base.data;
-	async_req.tfm = crypto_akcipher_tfm(crypto_akcipher_reqtfm(req));
-	async_req.flags = child_async_req->flags;
-	req->base.complete(&async_req, pkcs1pad_verify_complete(req, err));
+	err = pkcs1pad_verify_complete(req, err);
+
+out:
+	akcipher_request_complete(req, err);
 }
 
 /*