efi_loader: remove more double EFI_EXIT() in efi_disk.c

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 7f89704..ed06485 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -68,7 +68,7 @@
 
 	/* We only support full block access */
 	if (buffer_size & (blksz - 1))
-		return EFI_EXIT(EFI_DEVICE_ERROR);
+		return EFI_DEVICE_ERROR;
 
 	if (direction == EFI_DISK_READ)
 		n = blk_dread(desc, lba, blocks, buffer);
@@ -81,9 +81,9 @@
 	debug("EFI: %s:%d n=%lx blocks=%x\n", __func__, __LINE__, n, blocks);
 
 	if (n != blocks)
-		return EFI_EXIT(EFI_DEVICE_ERROR);
+		return EFI_DEVICE_ERROR;
 
-	return EFI_EXIT(EFI_SUCCESS);
+	return EFI_SUCCESS;
 }
 
 static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,