Move slurm_topo_build_config() after build_all_nodeline_info()

node_record_count is recalculated after build_all_nodeline_info(). So
redo the topology after the nodes have been redone after a reconfigure.

This allows the creation of switch bitmaps with the right size and with
the correct reference to nodes.

Prepend calls with rehash_node() to match other places where
slurm_topo_build_config() is called. See 9cd8d95, 46a47ab.

Bug 13805

NEWS

@@ -13,6 +13,7 @@ documents those changes that are of interest to users and administrators.
  -- scrontab - don't update the cron job tasks if the whole crontab file is
     left untouched after opening it with "scrontab -e".
  -- mpi/pmix - avoid crashing when running PMIx v5.0 branch with shmem support.
+ -- Fix building switch topology after a reconfig with the correct nodes.
 
 * Changes in Slurm 23.02.1
 ==========================

src/slurmd/slurmd/slurmd.c

@@ -1229,13 +1229,6 @@ _reconfigure(void)
 	cgroup_conf_reinit();
 	_read_config();
 
-	/*
-	 * Rebuild topology information and refresh slurmd topo infos
-	 */
-	slurm_topo_build_config();
-	_set_topo_info();
-	route_g_reconfigure();
-
 	/*
 	 * In case the administrator changed the cpu frequency set capabilities
 	 * on this node, rebuild the cpu frequency table information
@@ -1270,6 +1263,14 @@ _reconfigure(void)
 	_dynamic_reconfig();
 	_load_gres();
 
+	/*
+	 * Rebuild topology information and refresh slurmd topo infos
+	 */
+	rehash_node();
+	slurm_topo_build_config();
+	_set_topo_info();
+	route_g_reconfigure();
+
 	build_conf_buf();
 
 	slurm_mutex_lock(&cached_features_mutex);