[#1342] network/cache: Add node address to error multiClient

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

pkg/network/cache/multi.go

@@ -169,15 +169,16 @@ func (x *multiClient) iterateClients(ctx context.Context, f func(clientcore.Clie
 		var siErr *objectSDK.SplitInfoError
 		var eiErr *objectSDK.ECInfoError
 
+		if err != nil {
+			err = fmt.Errorf("client connection error at %v: %w", addr, err)
+			x.ReportError(err)
+		}
+
 		success := err == nil || errors.Is(err, context.Canceled) || errors.As(err, &siErr) || errors.As(err, &eiErr)
 		if success || firstErr == nil || errors.Is(firstErr, errRecentlyFailed) {
 			firstErr = err
 		}
 
-		if err != nil {
-			x.ReportError(err)
-		}
-
 		return success
 	})