efi_loader: fix uninitialized variable bug in efi_set_load_options()

Check for efi_search_protocol() failure before dereferencing "handler"
to avoid a crash.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>

diff --git a/lib/efi_loader/efi_load_options.c b/lib/efi_loader/efi_load_options.c
index 3cfddee014e9a51f71703aaaa4ac9b21ebd58874..5f62184da1cd5d9e11b77a8886f6ce4b4acb1598 100644 (file)
--- a/lib/efi_loader/efi_load_options.c
+++ b/lib/efi_loader/efi_load_options.c
@@ -31,10 +31,10 @@ efi_status_t efi_set_load_options(efi_handle_t handle,
        efi_status_t ret;
 
        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 = handler->protocol_interface;
        loaded_image_info->load_options = load_options;
        loaded_image_info->load_options_size = load_options_size;