if ibv_alloc_pd failed If creating an ib protection domain fails, during the cleanup a segfault will occur because trav->pd is null. Bug: 1197260 Change-Id: I21b867c204c4049496b1bf11ec47e4139610266a Signed-off-by: Mark Lipscombe <mlipscombe@gmail.com> Reviewed-on: http://review.gluster.org/9774 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Vijay Bellur <vbellur@redhat.com>