Fix G26 corrupted position

Marlin/src/gcode/bedlevel/G26.cpp

    */
   set_bed_leveling_enabled(!parser.seen('D'));
 
-  if (current_position.z < Z_CLEARANCE_BETWEEN_PROBES) {
+  if (current_position.z < Z_CLEARANCE_BETWEEN_PROBES)
     do_blocking_move_to_z(Z_CLEARANCE_BETWEEN_PROBES);
-    current_position = destination;
-  }
 
   #if DISABLED(NO_VOLUMETRICS)
     bool volumetric_was_enabled = parser.volumetric_enabled;