MDEV-24340 Unique final message of InnoDB during shutdown

innobase_space_shutdown(): Remove. We want this step to be executed
before the message "InnoDB: Shutdown completed; log sequence number "
is output by innodb_shutdown(). It used to be executed after that step.

innodb_shutdown(): Duplicate the code that used to live in
innobase_space_shutdown().

innobase_init_abort(): Merge with innobase_space_shutdown().

extra/mariabackup/xtrabackup.cc

@@ -6073,12 +6073,9 @@ static bool xtrabackup_prepare_func(char** argv)
           srv_shutdown_bg_undo_sources();
           srv_purge_shutdown();
           buf_flush_sync_all_buf_pools();
-          innodb_shutdown();
-          innobase_space_shutdown();
         }
-        else
-          innodb_shutdown();
 
+        innodb_shutdown();
         innodb_free_param();
 
 	/* output to metadata file */

storage/innobase/handler/ha_innodb.cc

@@ -3544,11 +3544,12 @@ ha_innobase::init_table_handle_for_HANDLER(void)
 	reset_template();
 }
 
-/** Free tablespace resources allocated. */
-void innobase_space_shutdown()
+/*********************************************************************//**
+Free any resources that were allocated and return failure.
+@return always return 1 */
+static int innobase_init_abort()
 {
-	DBUG_ENTER("innobase_space_shutdown");
-
+	DBUG_ENTER("innobase_init_abort");
 	srv_sys_space.shutdown();
 	if (srv_tmp_space.get_sanity_check_status()) {
 		fil_space_close(srv_tmp_space.name());
@@ -3559,20 +3560,6 @@ void innobase_space_shutdown()
 #ifdef WITH_INNODB_DISALLOW_WRITES
 	os_event_destroy(srv_allow_writes_event);
 #endif /* WITH_INNODB_DISALLOW_WRITES */
-
-	DBUG_VOID_RETURN;
-}
-
-/*********************************************************************//**
-Free any resources that were allocated and return failure.
-@return always return 1 */
-static
-int
-innobase_init_abort()
-/*=================*/
-{
-	DBUG_ENTER("innobase_init_abort");
-	innobase_space_shutdown();
 	DBUG_RETURN(1);
 }
 
@@ -4417,7 +4404,6 @@ innobase_end(handlerton*, ha_panic_function)
 		}
 
 		innodb_shutdown();
-		innobase_space_shutdown();
 
 		mysql_mutex_destroy(&commit_cond_m);
 		mysql_cond_destroy(&commit_cond);

storage/innobase/handler/ha_innodb.h

@@ -976,6 +976,3 @@ which is in the prepared state
 
 @return 0 or error number */
 int innobase_rollback_by_xid(handlerton* hton, XID* xid);
-
-/** Free tablespace resources allocated. */
-void innobase_space_shutdown();

storage/innobase/srv/srv0start.cc

@@ -2913,6 +2913,17 @@ innodb_shutdown()
 		fclose(dict_foreign_err_file);
 	}
 
+	srv_sys_space.shutdown();
+	if (srv_tmp_space.get_sanity_check_status()) {
+		fil_space_close(srv_tmp_space.name());
+		srv_tmp_space.delete_files();
+	}
+	srv_tmp_space.shutdown();
+
+#ifdef WITH_INNODB_DISALLOW_WRITES
+	os_event_destroy(srv_allow_writes_event);
+#endif /* WITH_INNODB_DISALLOW_WRITES */
+
 	if (srv_was_started && srv_print_verbose_log) {
 		ib::info() << "Shutdown completed; log sequence number "
 			<< srv_shutdown_lsn;