Fixing issue in get device API

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementProviderServiceImpl.java

@@ -709,7 +709,7 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
             } finally {
                 DeviceManagementDAOFactory.closeConnection();
             }
-            if (requireDeviceInfo) {
+            if (requireDeviceInfo && !allDevices.isEmpty()) {
                 paginationResult.setData(getAllDeviceInfo(allDevices));
             } else {
                 paginationResult.setData(allDevices);