tcp: Add error checking for flow_epoll_set() in tcp_flow_migrate_target()

Commit 90287c2a774e ("tcp: Register fds with epoll at flow creation")
added a call to flow_epoll_set() in tcp_flow_migrate_target() without
checking for the error code.

As Laurent explains, that's harmless, as tcp_flow_migrate_target_ext()
will clean up the flow anyway, and we'll just uselessly call
flow_hash_insert() before removing it again.

But Coverity Scan complains about the unchecked return code, so check
it, skip flow_hash_insert() in that case, and explain in comments why
we don't have to do anything else.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>

0 files changed, 0 insertions, 0 deletions