[SYCL][L0] Address static analyzer issue with Queue->LastCommandEvent (#7787)

Signed-off-by: Sergey V Maslov <[email protected]>

Author: smaslov-intel

sycl/plugins/level_zero/pi_level_zero.cpp

@@ -2192,6 +2192,9 @@ pi_result _pi_ze_event_list_t::createAndRetainPiZeEventList(
     }
   }
 
+  // For in-order queues, every command should be executed only after the
+  // previous command has finished. The event associated with the last
+  // enqueued command is added into the waitlist to ensure in-order semantics.
   bool IncludeLastCommandEvent =
       CurQueue->isInOrderQueue() && CurQueue->LastCommandEvent != nullptr;
 
@@ -2203,16 +2206,20 @@ pi_result _pi_ze_event_list_t::createAndRetainPiZeEventList(
     IncludeLastCommandEvent = false;
 
   try {
+    pi_uint32 TmpListLength = 0;
+
     if (IncludeLastCommandEvent) {
       this->ZeEventList = new ze_event_handle_t[EventListLength + 1];
       this->PiEventList = new pi_event[EventListLength + 1];
+      std::shared_lock<pi_shared_mutex> Lock(CurQueue->LastCommandEvent->Mutex);
+      this->ZeEventList[0] = CurQueue->LastCommandEvent->ZeEvent;
+      this->PiEventList[0] = CurQueue->LastCommandEvent;
+      TmpListLength = 1;
     } else if (EventListLength > 0) {
       this->ZeEventList = new ze_event_handle_t[EventListLength];
       this->PiEventList = new pi_event[EventListLength];
     }
 
-    pi_uint32 TmpListLength = 0;
-
     if (EventListLength > 0) {
       for (pi_uint32 I = 0; I < EventListLength; I++) {
         PI_ASSERT(EventList[I] != nullptr, PI_ERROR_INVALID_VALUE);
@@ -2292,16 +2299,6 @@ pi_result _pi_ze_event_list_t::createAndRetainPiZeEventList(
       }
     }
 
-    // For in-order queues, every command should be executed only after the
-    // previous command has finished. The event associated with the last
-    // enqueued command is added into the waitlist to ensure in-order semantics.
-    if (IncludeLastCommandEvent) {
-      std::shared_lock<pi_shared_mutex> Lock(CurQueue->LastCommandEvent->Mutex);
-      this->ZeEventList[TmpListLength] = CurQueue->LastCommandEvent->ZeEvent;
-      this->PiEventList[TmpListLength] = CurQueue->LastCommandEvent;
-      TmpListLength += 1;
-    }
-
     this->Length = TmpListLength;
 
   } catch (...) {