RDMA/cxgb3: Handle build_phys_page_list() failure in iwch_reregister_phys_mem()

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index f2774ae906bf..24e0df04f7db 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -545,11 +545,14 @@ static int iwch_reregister_phys_mem(struct ib_mr *mr,
                 php = to_iwch_pd(pd);
         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
                 mh.attr.perms = iwch_ib_to_tpt_access(acc);
-        if (mr_rereg_mask & IB_MR_REREG_TRANS)
+        if (mr_rereg_mask & IB_MR_REREG_TRANS) {
                 ret = build_phys_page_list(buffer_list, num_phys_buf,
                                            iova_start,
                                            &total_size, &npages,
                                            &shift, &page_list);
+                if (ret)
+                        return ret;
+        }
 
         ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
         kfree(page_list);