tuned.initscript: "usage" follows common usage policy, fixed indentation

tuned.initscript

@@ -80,11 +80,6 @@ usage() {
     echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
 }
 
-if [ $# -eq 0 ]; then
-    usage
-    exit 0
-fi
-
 case "$1" in
     start)
         rh_status_q && exit 0
@@ -111,6 +106,10 @@ case "$1" in
         rh_status_q || exit 0
         restart
         ;;
+    usage)
+        usage
+        exit 0
+        ;;
     *)
         usage
         exit 2