igb: missing rtnl_unlock in igb_sriov_reinit()

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/igb/igb_main.c

@@ -7506,6 +7506,7 @@ static int igb_sriov_reinit(struct pci_dev *dev)
 	igb_init_queue_configuration(adapter);
 
 	if (igb_init_interrupt_scheme(adapter, true)) {
+		rtnl_unlock();
 		dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
 		return -ENOMEM;
 	}