[#184] *: Unify done contexts handling

If `ctx.Done()`, return `ctx.Err()` in every function that returns an error.

Signed-off-by: Pavel Karpy <p.karpy@yadro.com>

pkg/innerring/notary.go

@@ -88,7 +88,7 @@ func awaitNotaryDepositInClient(ctx context.Context, cli *client.Client, txHash
 	for i := 0; i < notaryDepositTimeout; i++ {
 		select {
 		case <-ctx.Done():
-			return nil
+			return ctx.Err()
 		default:
 		}
 

pkg/local_object_storage/engine/inhume.go

@@ -222,7 +222,7 @@ func (e *StorageEngine) processExpiredLocks(ctx context.Context, lockers []oid.A
 
 		select {
 		case <-ctx.Done():
-			e.log.Info("interrupt processing the expired locks by context")
+			e.log.Info("interrupt processing the expired locks", zap.Error(ctx.Err()))
 			return true
 		default:
 			return false
@@ -236,7 +236,7 @@ func (e *StorageEngine) processDeletedLocks(ctx context.Context, lockers []oid.A
 
 		select {
 		case <-ctx.Done():
-			e.log.Info("interrupt processing the deleted locks by context")
+			e.log.Info("interrupt processing the deleted locks", zap.Error(ctx.Err()))
 			return true
 		default:
 			return false

pkg/morph/client/client.go

@@ -340,7 +340,7 @@ func (c *Client) Wait(ctx context.Context, n uint32) error {
 	for {
 		select {
 		case <-ctx.Done():
-			return nil
+			return ctx.Err()
 		default:
 		}