files: Do setup_newborn_fds() later

This patch makes the call of service fds relocation after
root_prepare_shared()->prepare_fd_pid(). Next patches
will make service_fd_base depend on task's max fd used,
and for root_item we need to read all fles to know
the maximum of them.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/cr-restore.c

@@ -1051,9 +1051,6 @@ static int setup_newborn_fds(struct pstree_item *me)
 			return -1;
 	}
 
-	if (log_init_by_pid(vpid(me)))
-		return -1;
-
 	return 0;
 }
 
@@ -1607,9 +1604,6 @@ static int restore_task_with_children(void *_arg)
 	if ( !(ca->clone_flags & CLONE_FILES))
 		close_safe(&ca->fd);
 
-	if (setup_newborn_fds(current))
-		goto err;
-
 	pid = getpid();
 	if (vpid(current) != pid) {
 		pr_err("Pid %d do not match expected %d\n", pid, vpid(current));
@@ -1617,6 +1611,9 @@ static int restore_task_with_children(void *_arg)
 		goto err;
 	}
 
+	if (log_init_by_pid(vpid(current)))
+		return -1;
+
 	if (current->parent == NULL) {
 		/*
 		 * The root task has to be in its namespaces before executing
@@ -1683,6 +1680,9 @@ static int restore_task_with_children(void *_arg)
 			goto err;
 	}
 
+	if (setup_newborn_fds(current))
+		goto err;
+
 	if (restore_task_mnt_ns(current))
 		goto err;