Javadoc warning fixes

Change-Id: I30b3398b849da5d528f2bce58004d190ca17ad50
diff --git a/src/main/java/org/onosproject/segmentrouting/config/DeviceProperties.java b/src/main/java/org/onosproject/segmentrouting/config/DeviceProperties.java
index 632eeec..3780db7 100644
--- a/src/main/java/org/onosproject/segmentrouting/config/DeviceProperties.java
+++ b/src/main/java/org/onosproject/segmentrouting/config/DeviceProperties.java
@@ -92,8 +92,8 @@
      * Value: a list of ports, which are bound to the subnet
      *
      * @param deviceId device identifier
+     * @throws DeviceConfigNotFoundException if the device configuration is not found
      * @return a map that contains all subnet-to-ports mapping of given device
-     * @throws DeviceConfigNotFoundException
      */
     Map<Ip4Prefix, List<PortNumber>> getSubnetPortsMap(DeviceId deviceId)
             throws DeviceConfigNotFoundException;