efi_loader: simplify efi_set_load_options()

* Replace the OpenProtocol() call by efi_search_protocol().
* Remove the CloseProtocol() call.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

lib/efi_loader/efi_load_options.c

@@ -27,23 +27,18 @@ efi_status_t efi_set_load_options(efi_handle_t handle,
 				  void *load_options)
 {
 	struct efi_loaded_image *loaded_image_info;
+	struct efi_handler *handler;
 	efi_status_t ret;
 
-	ret = EFI_CALL(systab.boottime->open_protocol(
-					handle,
-					&efi_guid_loaded_image,
-					(void **)&loaded_image_info,
-					efi_root, NULL,
-					EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL));
+	ret = efi_search_protocol(handle, &efi_guid_loaded_image, &handler);
+	loaded_image_info = handler->protocol_interface;
 	if (ret != EFI_SUCCESS)
 		return EFI_INVALID_PARAMETER;
 
 	loaded_image_info->load_options = load_options;
 	loaded_image_info->load_options_size = load_options_size;
 
-	return EFI_CALL(systab.boottime->close_protocol(handle,
-							&efi_guid_loaded_image,
-							efi_root, NULL));
+	return EFI_SUCCESS;
 }
 
 /**