efi_loader: Delete() return EFI_WARN_DELETE_FAILURE

If EFI_FILE_PROTOCOL.Delete() fails, always close the handle and return
EFI_WARN_DELETE_FAILURE.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
index 182d735..36ca719 100644
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -307,16 +307,10 @@
 
 	EFI_ENTRY("%p", file);
 
-	if (set_blk_dev(fh)) {
-		ret = EFI_DEVICE_ERROR;
-		goto error;
-	}
+	if (set_blk_dev(fh) || fs_unlink(fh->path))
+		ret = EFI_WARN_DELETE_FAILURE;
 
-	if (fs_unlink(fh->path))
-		ret = EFI_DEVICE_ERROR;
 	file_close(fh);
-
-error:
 	return EFI_EXIT(ret);
 }