[L0] do not ignore returned values from zeHostSynchronize

Instead, return the error immediately. Ignoring the errors,
resulted in silent failure and unexpected errors from next operations.

Author: igchor

source/adapters/level_zero/event.cpp

@@ -108,7 +108,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urEnqueueEventsWait(
           /* IsInternal */ false));
     }
 
-    Queue->synchronize();
+    UR_CALL(Queue->synchronize());
 
     if (OutEvent) {
       Queue->LastCommandEvent = reinterpret_cast<ur_event_handle_t>(*OutEvent);

source/adapters/level_zero/queue.cpp

@@ -438,7 +438,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urQueueRelease(
       return Res;
 
     // Make sure all commands get executed.
-    Queue->synchronize();
+    UR_CALL(Queue->synchronize());
 
     // Destroy all the fences created associated with this queue.
     for (auto it = Queue->CommandListMap.begin();
@@ -654,7 +654,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urQueueFinish(
     // Lock automatically releases when this goes out of scope.
     std::scoped_lock<ur_shared_mutex> Lock(UrQueue->Mutex);
 
-    UrQueue->synchronize();
+    UR_CALL(UrQueue->synchronize());
   } else {
     std::unique_lock<ur_shared_mutex> Lock(UrQueue->Mutex);
     std::vector<ze_command_queue_handle_t> ZeQueues;
@@ -1241,7 +1241,7 @@ ur_queue_handle_t_::executeCommandList(ur_command_list_ptr_t CommandList,
   // Check global control to make every command blocking for debugging.
   if (IsBlocking || (UrL0Serialize & UrL0SerializeBlock) != 0) {
     if (UsingImmCmdLists) {
-      synchronize();
+      UR_CALL(synchronize());
     } else {
       // Wait until command lists attached to the command queue are executed.
       ZE2UR_CALL(zeHostSynchronize, (ZeCommandQueue));
@@ -1445,7 +1445,7 @@ ur_result_t ur_queue_handle_t_::synchronize() {
         for (auto &QueueGroup : QueueMap) {
           if (UsingImmCmdLists) {
             for (auto &ImmCmdList : QueueGroup.second.ImmCmdLists)
-              syncImmCmdList(this, ImmCmdList);
+              UR_CALL(syncImmCmdList(this, ImmCmdList));
           } else {
             for (auto &ZeQueue : QueueGroup.second.ZeQueues)
               if (ZeQueue)

source/adapters/level_zero/queue.hpp

@@ -408,7 +408,7 @@ struct ur_queue_handle_t_ : _ur_object {
   bool isImmediateSubmission() const;
 
   // Wait for all commandlists associated with this Queue to finish operations.
-  ur_result_t synchronize();
+  [[nodiscard]] ur_result_t synchronize();
 
   // Get event from the queue's cache.
   // Returns nullptr if the cache doesn't contain any reusable events or if the