drbd: Fix double free problem in drbd_create_device

In drbd_create_device(), the 'out_no_io_page' lable has called
blk_cleanup_disk() when return failed.

So remove the 'out_cleanup_disk' lable to avoid double free the
disk pointer.

Fixes: e92ab4e ("drbd: add error handling support for add_disk()")
Signed-off-by: Wu Bo <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>

Author: Wu Bo

drivers/block/drbd/drbd_main.c

@@ -2796,7 +2796,7 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
 
 	err = add_disk(disk);
 	if (err)
-		goto out_cleanup_disk;
+		goto out_idr_remove_vol;
 
 	/* inherit the connection state */
 	device->state.conn = first_connection(resource)->cstate;
@@ -2810,8 +2810,6 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
 	drbd_debugfs_device_add(device);
 	return NO_ERROR;
 
-out_cleanup_disk:
-	blk_cleanup_disk(disk);
 out_idr_remove_vol:
 	idr_remove(&connection->peer_devices, vnr);
 out_idr_remove_from_resource: