node/put: fix wait group counter

If `wg.Add` was called, `wg.Done` must be executed in any way.

Signed-off-by: Pavel Karpy <[email protected]>

pkg/services/object/put/distributed.go

@@ -325,6 +325,7 @@ func (x placementIterator) iterateNodesForObject(obj oid.ID, f func(nodeDesc) er
 						return
 					}
 				}); err != nil {
+					wg.Done()
 					svcutil.LogWorkerPoolError(x.log, "PUT", err)
 					err = fmt.Errorf("submit next job to save an object to the worker pool: %w", err)
 					if e, _ := lastRespErr.Load().(error); e != nil {