Return on mode change without deploying

Marlin/src/gcode/probe/M401_M402.cpp

@@ -33,16 +33,20 @@
 
 /**
  * M401: Deploy and activate the Z probe
+ * BLTouch Only :
+ *  S : Set High Speed Mode
  */
 void GcodeSuite::M401() {
   #if ENABLED(BLTOUCH)
     const bool seen_S = parser.seen('S'),
              to_enable = (seen_S && parser.value_bool());
-    if (seen_S)
+    if (seen_S) {
       if(to_enable)
        bltouch.bltouch_high_speed = true;
       else
         bltouch.bltouch_high_speed = false;
+      return;
+    }
   #endif
   probe.deploy();
   TERN_(PROBE_TARE, probe.tare());

Marlin/src/module/settings.cpp

@@ -277,7 +277,7 @@ typedef struct SettingsDataStruct {
   // BLTOUCH
   //
   bool bltouch_last_written_mode;
-  bool bltouch_high_speed;.
+  bool bltouch_high_speed;
 
   //
   // Kinematic Settings