no need to sleep for last retry

Signed-off-by: forrestchen <forrestchen@tencent.com>

pkg/volume/iscsi/iscsi_util.go

@@ -58,6 +58,9 @@ func waitForPathToExistInternal(devicePath string, maxRetries int, deviceTranspo
 		if err != nil && !os.IsNotExist(err) {
 			return false
 		}
+		if i == maxRetries-1 {
+			break
+		}
 		time.Sleep(time.Second)
 	}
 	return false

pkg/volume/rbd/rbd_util.go

@@ -84,6 +84,9 @@ func waitForPath(pool, image string, maxRetries int) (string, bool) {
 		if found {
 			return devicePath, true
 		}
+		if i == maxRetries-1 {
+			break
+		}
 		time.Sleep(time.Second)
 	}
 	return "", false