addressed segfault and return errors

Signed-off-by: Zhang, Winston <[email protected]>

Author: winstonzhang-intel

unified-runtime/source/adapters/level_zero/context.cpp

@@ -464,7 +464,7 @@ ur_result_t ur_context_handle_t_::getFreeSlotInExistingOrNewPool(
     ze_result_t Result = ZE_CALL_NOCHECK(
         zeEventPoolCreate,
         (ZeContext, &ZeEventPoolDesc, ZeDevices.size(), &ZeDevices[0], &Pool));
-    if (ze2urResult(Result) == UR_RESULT_ERROR_OUT_OF_RESOURCES &&
+    if (ze2urResult(Result) == UR_RESULT_ERROR_OUT_OF_RESOURCES && Queue &&
         !Queue->isInOrderQueue()) {
       if (Queue->UsingImmCmdLists) {
         UR_CALL(CleanupEventsInImmCmdLists(Queue, true /*QueueLocked*/,
@@ -475,6 +475,8 @@ ur_result_t ur_context_handle_t_::getFreeSlotInExistingOrNewPool(
       }
       ZE2UR_CALL(zeEventPoolCreate, (ZeContext, &ZeEventPoolDesc,
                                      ZeDevices.size(), &ZeDevices[0], &Pool));
+    } else if (ze2urResult(Result) != UR_RESULT_SUCCESS) {
+      return ze2urResult(Result);
     }
     Index = 0;
     NumEventsAvailableInEventPool[Pool] = MaxNumEventsPerPool - 1;
@@ -562,7 +564,7 @@ ur_result_t ur_context_handle_t_::getFreeSlotInExistingOrNewPool(
     ze_result_t Result = ZE_CALL_NOCHECK(
         zeEventPoolCreate,
         (ZeContext, &ZeEventPoolDesc, ZeDevices.size(), &ZeDevices[0], &Pool));
-    if (ze2urResult(Result) == UR_RESULT_ERROR_OUT_OF_RESOURCES &&
+    if (ze2urResult(Result) == UR_RESULT_ERROR_OUT_OF_RESOURCES && Queue &&
         !Queue->isInOrderQueue()) {
       if (Queue->UsingImmCmdLists) {
         UR_CALL(CleanupEventsInImmCmdLists(Queue, true /*QueueLocked*/,
@@ -573,6 +575,8 @@ ur_result_t ur_context_handle_t_::getFreeSlotInExistingOrNewPool(
       }
       ZE2UR_CALL(zeEventPoolCreate, (ZeContext, &ZeEventPoolDesc,
                                      ZeDevices.size(), &ZeDevices[0], &Pool));
+    } else if (ze2urResult(Result) != UR_RESULT_SUCCESS) {
+      return ze2urResult(Result);
     }
     NumEventsAvailableInEventPool[*ZePool] = MaxNumEventsPerPool - 1;
     NumEventsUnreleasedInEventPool[*ZePool] = 1;