Don't set address for failed remote connections

We created failed connections we no address attached.
When the connection is sent to RemoteConnectionService
the null address is translated to a setAddress() call.

This causes all failed connections to show up as "unknown".
Fix is to only call setAddress if creating the connection
succeeded.

BUG: 18830726
Change-Id: I680e2fa4c69157a9fdbfa348c6af1f2f87aafd48