engine_wt: Suppress cache errors

The status of the IO in WT should depend on the core IO status only

Signed-off-by: Michal Mielewczyk <[email protected]>

src/engine/engine_wt.c

@@ -93,7 +93,7 @@ static void _ocf_write_wt_req_complete(struct ocf_request *req)
 	OCF_DEBUG_RQ(req, "Completion");
 
 	if (req->info.cache_error || req->info.core_error) {
-		req->complete(req, req->error);
+		req->complete(req, req->info.core_error ? req->error : 0);
 		ocf_engine_invalidate(req);
 		return;
 	}