Fix for behavior on discrete GPU.

Author: rdeodhar

sycl/plugins/level_zero/pi_level_zero.cpp

@@ -4051,6 +4051,11 @@ piEnqueueMemBufferMap(pi_queue Queue, pi_mem Buffer, pi_bool BlockingMap,
                                                         &ZeFence))
     return Res;
 
+  // Set the commandlist in the event
+  if (Event) {
+    (*Event)->ZeCommandList = ZeCommandList;
+  }
+
   ze_event_handle_t *ZeEventWaitList =
       _pi_event::createZeEventList(NumEventsInWaitList, EventWaitList);
 
@@ -4141,6 +4146,11 @@ pi_result piEnqueueMemUnmap(pi_queue Queue, pi_mem MemObj, void *MappedPtr,
                                                         &ZeFence))
     return Res;
 
+  // Set the commandlist in the event
+  if (Event) {
+    (*Event)->ZeCommandList = ZeCommandList;
+  }
+
   ze_event_handle_t *ZeEventWaitList =
       _pi_event::createZeEventList(NumEventsInWaitList, EventWaitList);