[fec] Get FEC mode when port is already admin down (sonic-net#1403)

Signed-off-by: Danny Allen <[email protected]>

Author: daall

orchagent/portsorch.cpp

@@ -2031,6 +2031,7 @@ void PortsOrch::doPortTask(Consumer &consumer)
                             else
                             {
                                 /* Port is already down, setting fec mode*/
+                                p.m_fec_mode = fec_mode_map[fec_mode];
                                 if (setPortFec(p, p.m_fec_mode))
                                 {
                                     m_portList[alias] = p;