Migrate VM from Compute Node 1 to Compute Node 2 and then back to Compute Node 1  fails with error}

Steps to reproduce:

1. Create Network Net1
2. Create Subnet Subnet1
3. Create Neutron port
4. Spawn VM in compute Node 1
5. Migrate the VM to Compute Node 2
6. Migrate the VM back to compute Node 1

Issue : VM migration fails at Step 6 with below mentioned error.

{"message": "Unable to migrate instance (f1515f50-2366-4f48-9669-c06eb089166f) to current host (os-pike-compute1).", "code": 400, "created": "2018-04-24T07:50:56Z"

For more details please refer to the logs attached.