crypto: chacha20poly1305 - use template array registering API to simplify the code

Use crypto template array registering API to simplify the code.
Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/chacha20poly1305.c

@@ -701,37 +701,28 @@ static int rfc7539esp_create(struct crypto_template *tmpl, struct rtattr **tb)
 	return chachapoly_create(tmpl, tb, "rfc7539esp", 8);
 }
 
-static struct crypto_template rfc7539_tmpl = {
-	.name = "rfc7539",
-	.create = rfc7539_create,
-	.module = THIS_MODULE,
-};
-
-static struct crypto_template rfc7539esp_tmpl = {
-	.name = "rfc7539esp",
-	.create = rfc7539esp_create,
-	.module = THIS_MODULE,
+static struct crypto_template rfc7539_tmpls[] = {
+	{
+		.name = "rfc7539",
+		.create = rfc7539_create,
+		.module = THIS_MODULE,
+	}, {
+		.name = "rfc7539esp",
+		.create = rfc7539esp_create,
+		.module = THIS_MODULE,
+	},
 };
 
 static int __init chacha20poly1305_module_init(void)
 {
-	int err;
-
-	err = crypto_register_template(&rfc7539_tmpl);
-	if (err)
-		return err;
-
-	err = crypto_register_template(&rfc7539esp_tmpl);
-	if (err)
-		crypto_unregister_template(&rfc7539_tmpl);
-
-	return err;
+	return crypto_register_templates(rfc7539_tmpls,
+					 ARRAY_SIZE(rfc7539_tmpls));
 }
 
 static void __exit chacha20poly1305_module_exit(void)
 {
-	crypto_unregister_template(&rfc7539esp_tmpl);
-	crypto_unregister_template(&rfc7539_tmpl);
+	crypto_unregister_templates(rfc7539_tmpls,
+				    ARRAY_SIZE(rfc7539_tmpls));
 }
 
 module_init(chacha20poly1305_module_init);