fixing the agent unable to enroll issue

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

@@ -335,23 +335,25 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
             }
             return false;
         }
-        try {
-            int tenantId = this.getTenantId();
 
-            Device device = this.getDevice(deviceId, false);
-            if (device == null) {
-                if (log.isDebugEnabled()) {
-                    log.debug("Device not found for id '" + deviceId.getId() + "'");
-                }
-                return false;
+        int tenantId = this.getTenantId();
+
+        Device device = this.getDevice(deviceId, false);
+        if (device == null) {
+            if (log.isDebugEnabled()) {
+                log.debug("Device not found for id '" + deviceId.getId() + "'");
             }
+            return false;
+        }
 
-            if (device.getEnrolmentInfo().getStatus().equals(EnrolmentInfo.Status.REMOVED)) {
-                if (log.isDebugEnabled()) {
-                    log.debug("Device has already disenrolled : " + deviceId.getId() + "'");
-                }
-                return false;
+        if (device.getEnrolmentInfo().getStatus().equals(EnrolmentInfo.Status.REMOVED)) {
+            if (log.isDebugEnabled()) {
+                log.debug("Device has already disenrolled : " + deviceId.getId() + "'");
             }
+            return true;
+        }
+
+        try {
             device.getEnrolmentInfo().setDateOfLastUpdate(new Date().getTime());
             device.getEnrolmentInfo().setStatus(EnrolmentInfo.Status.REMOVED);
             DeviceManagementDAOFactory.beginTransaction();