pvrdma: Fix compilation error

  In function ‘create_qp’:
  hw/rdma/vmw/pvrdma_cmd.c:517:16: error: ‘rc’ undeclared

The backport of 509f57c in 41dd30f mishandled the conflict

Signed-off-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

hw/rdma/vmw/pvrdma_cmd.c

@@ -514,7 +514,7 @@ static int create_qp(PVRDMADev *dev, union pvrdma_cmd_req *req,
                                      cmd->recv_cq_handle, rings, &resp->qpn);
     if (resp->hdr.err) {
         destroy_qp_rings(rings);
-        return rc;
+        goto out;
     }
 
     resp->max_send_wr = cmd->max_send_wr;