Set connected mode after setting remote address
Set connected mode after setting remote address

ortp: according to oRTP documentation rtp_session_set_connected_mode()
uses the address set by rtp_session_set_remote_addr() - move the
function call accordingly.

Fixes: OS#1661

osmocom/libosmo-abis,osmocom/libosmo-abis,osmocom/libosmo-abis