Add docUrl into metadata.

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/metadata/mgt/WhiteLabelManagementServiceImpl.java

@@ -68,7 +68,6 @@ public class WhiteLabelManagementServiceImpl implements WhiteLabelManagementServ
     private void initializeWhiteLabelThemes() throws MetadataManagementException {
         int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId(true);
         WhiteLabelTheme defaultTheme = getDefaultWhiteLabelTheme();
-        try {
         Metadata whiteLabelMetadata = getWhiteLabelMetaData(tenantId);
         if (whiteLabelMetadata != null) {
             WhiteLabelTheme whiteLabelTheme = new Gson().fromJson(whiteLabelMetadata.getMetaValue(),
@@ -84,25 +83,25 @@ public class WhiteLabelManagementServiceImpl implements WhiteLabelManagementServ
                         log.debug("WhiteLabel theme's DocUrl was missing and has been updated to the default value " +
                                 "for tenant: " + tenantId);
                     }
-                    } catch (TransactionManagementException e) {
-                        MetadataManagementDAOFactory.rollbackTransaction();
-                        String transactionErrorMsg = "Transaction failed while updating white label theme for tenant: "
-                                + tenantId;
-                        log.error(transactionErrorMsg, e);
-                        throw new MetadataManagementException(transactionErrorMsg, e);
-                    }
                 }
-            } else {
-                addDefaultWhiteLabelThemeIfNotExist(tenantId);
-            }
-        } catch (MetadataManagementDAOException e) {
+                catch (MetadataManagementDAOException e) {
+                    MetadataManagementDAOFactory.rollbackTransaction();
                     String msg = "Error occurred while fetching white label metadata for tenant: " + tenantId;
                     log.error(msg, e);
                     throw new MetadataManagementException(msg, e);
+                } catch (TransactionManagementException e) {
+                    String msg = "Transaction failed while updating white label theme for tenant: "
+                            + tenantId;
+                    log.error(msg, e);
+                    throw new MetadataManagementException(msg, e);
                 } finally {
                     MetadataManagementDAOFactory.closeConnection();
                 }
             }
+        } else {
+            addDefaultWhiteLabelThemeIfNotExist(tenantId);
+        }
+    }
 
     @Override
     public FileResponse getWhiteLabelFavicon(String tenantDomain) throws MetadataManagementException, NotFoundException {