Ensure to enable maco.service before maco's upgrade

cluster/maco.apply.update.sh

@@ -283,15 +283,17 @@ main() {                                                        # {{{
 	is_proc_running "${apt_proc_pattern}" \
 		&& exit 0
 
-	## Try to upgrade Maco
+	## Maco is ready to be upgraded
+	### First, ensure maco.service is enable for next reboot
+	systemctl --quiet enable maco.service > /dev/null 2>&1
+
+	## Then try to upgrade Maco
 	### If error: Exit 50
 	### If success: Clean host (temp files,…)
-	### Ensure maco.service is enable for next reboot
 	### then reboot the system
 	upgrade_maco \
 		|| exit 50 \
 		&& clean_host \
-		&& systemctl --quiet enable  maco.service > /dev/null 2>&1 \
 		&& systemctl reboot
 
 }