reference backup's volume info

Author: Pearl1594

server/src/main/java/org/apache/cloudstack/backup/BackupManagerImpl.java

@@ -826,7 +826,7 @@ public boolean restoreBackupVolumeAndAttachToVM(final String backedUpVolumeUuid,
             throw new CloudRuntimeException(String.format("Error restoring volume [%s] of VM [%s] to host [%s] using backup provider [%s] due to: [%s].",
                     backedUpVolumeUuid, vm.getUuid(), host.getUuid(), backupProvider.getName(), result.second()));
         }
-        if (!attachVolumeToVM(vm.getDataCenterId(), result.second(), vmFromBackup.getBackupVolumeList(),
+        if (!attachVolumeToVM(vm.getDataCenterId(), result.second(), backup.getBackedUpVolumes(),
                             backedUpVolumeUuid, vm, datastore.getUuid(), backup)) {
             throw new CloudRuntimeException(String.format("Error attaching volume [%s] to VM [%s]." + backedUpVolumeUuid, vm.getUuid()));
         }