The real_num_tx_queues was not being set when in MSI-X only mode.  This patch
corrects that path so all interrupt types are correctly configured.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
                              adapter->msix_entries,
                              numvecs);
        if (err == 0)
-               return;
+               goto out;
 
        igb_reset_interrupt_capability(adapter);
 
        adapter->num_tx_queues = 1;
        if (!pci_enable_msi(adapter->pdev))
                adapter->flags |= IGB_FLAG_HAS_MSI;
-
+out:
        /* Notify the stack of the (possibly) reduced Tx Queue count. */
        adapter->netdev->real_num_tx_queues = adapter->num_tx_queues;
        return;