bridge: fix handling errors during setupIPChains()
bridge: fix handling errors during setupIPChains()

Signed-off-by: Akihiro Suda <ea940da7e429af3d0d0c18296cabd0112a36bad5@lab.ntt.co.jp>

abhi/libnetwork,kolyshkin/libnetwork,docker/libnetwork,mahak/libnetwork,kolyshkin/libnetwork,medallia/libnetwork,abhi/libnetwork,vdemeester/libnetwork,kolyshkin/libnetwork,docker/libnetwork,medallia/libnetwork,docker/libnetwork,vdemeester/libnetwork,vdemeester/libnetwork,abhi/libnetwork,mahak/libnetwork,mahak/libnetwork,medallia/libnetwork