[#2075] node: Do not make notary requests on shutdown

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

cmd/neofs-node/morph.go

@@ -161,7 +161,7 @@ func waitNotaryDeposit(c *cfg, tx util.Uint256) error {
 	for i := 0; i < notaryDepositRetriesAmount; i++ {
 		select {
 		case <-c.ctx.Done():
-			return nil
+			return c.ctx.Err()
 		default:
 		}