Fix Z safe homing sanity check for no probe

Fix #9851

Marlin/src/inc/SanityCheck.h

  * Make sure Z_SAFE_HOMING point is reachable
  */
 #if ENABLED(Z_SAFE_HOMING)
-  #if !WITHIN(Z_SAFE_HOMING_X_POINT, MIN_PROBE_X, MAX_PROBE_X)
-    #if HAS_BED_PROBE
+  #if HAS_BED_PROBE
+    #if !WITHIN(Z_SAFE_HOMING_X_POINT, MIN_PROBE_X, MAX_PROBE_X)
       #error "Z_SAFE_HOMING_X_POINT can't be reached by the Z probe."
-    #else
-      #error "Z_SAFE_HOMING_X_POINT can't be reached by the nozzle."
-    #endif
-  #elif !WITHIN(Z_SAFE_HOMING_Y_POINT, MIN_PROBE_Y, MAX_PROBE_Y)
-    #if HAS_BED_PROBE
+    #elif !WITHIN(Z_SAFE_HOMING_Y_POINT, MIN_PROBE_Y, MAX_PROBE_Y)
       #error "Z_SAFE_HOMING_Y_POINT can't be reached by the Z probe."
-    #else
-      #error "Z_SAFE_HOMING_Y_POINT can't be reached by the nozzle."
     #endif
+  #elif !WITHIN(Z_SAFE_HOMING_X_POINT, X_MIN_POS, X_MAX_POS)
+    #error "Z_SAFE_HOMING_X_POINT can't be reached by the nozzle."
+  #elif !WITHIN(Z_SAFE_HOMING_Y_POINT, Y_MIN_POS, Y_MAX_POS)
+    #error "Z_SAFE_HOMING_Y_POINT can't be reached by the nozzle."
   #endif
 #endif // Z_SAFE_HOMING