bgpd: fix 'nexthop_set failed' error message often displayed
The 'nexthop_set failed, resetting connection - intf' log message
is often seen when peering with BGP peers. This message has been
displayed by introducing a recent fix that extracts the IP/port
information of outgoing connections when peering is not yet
established.
Fix this by separating the update of the socket information from
the call to bgp_zebra_nexthop_set().
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>