migration/rdma: fix qemu_rdma_block_for_wrid error paths

The two places that 'goto err_block_for_wrid' weren't setting ret
and so would end up returning 0 even though we've failed.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <20170717110936.23314-4-dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

diff --git a/migration/rdma.c b/migration/rdma.c
index 6111e10c70b6178550dfc242ec08d6d05c6ac40f..59810aec2ee248d7d18662b9641453138e74fa5b 100644 (file)
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -1521,14 +1521,16 @@ static int qemu_rdma_block_for_wrid(RDMAContext *rdma, int wrid_requested,
             yield_until_fd_readable(rdma->comp_channel->fd);
         }
 
-        if (ibv_get_cq_event(rdma->comp_channel, &cq, &cq_ctx)) {
+        ret = ibv_get_cq_event(rdma->comp_channel, &cq, &cq_ctx);
+        if (ret) {
             perror("ibv_get_cq_event");
             goto err_block_for_wrid;
         }
 
         num_cq_events++;
 
-        if (ibv_req_notify_cq(cq, 0)) {
+        ret = -ibv_req_notify_cq(cq, 0);
+        if (ret) {
             goto err_block_for_wrid;
         }
 
@@ -1564,6 +1566,8 @@ err_block_for_wrid:
     if (num_cq_events) {
         ibv_ack_cq_events(cq, num_cq_events);
     }
+
+    rdma->error_state = ret;
     return ret;
 }