tipc: Eliminate improper use of TIPC_OK error code

This patch corrects many places where TIPC routines indicated
successful completion by returning TIPC_OK instead of 0.
(The TIPC_OK symbol has the value 0, but it should only be used
in contexts that deal with the error code field of a TIPC
message header.)

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/tipc/bcast.c
Simple merge

diff --cc net/tipc/bearer.c
Simple merge

diff --cc net/tipc/cluster.c
Simple merge

diff --cc net/tipc/eth_media.c
Simple merge

diff --cc net/tipc/link.c
Simple merge

diff --cc net/tipc/net.c
Simple merge

diff --cc net/tipc/port.c
Simple merge

diff --cc net/tipc/ref.c
Simple merge

diff --cc net/tipc/user_reg.c
Simple merge