[ATM]: [lanai] lanai missing unregister

Signed-off-by: NDave Jones <davej@redhat.com>
Signed-off-by: NChas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/atm/lanai.c

@@ -2761,6 +2761,7 @@ static void __exit lanai_module_exit(void)
 	 * gone, so there isn't much to do
 	 */
 	DPRINTK("cleanup_module()\n");
+	pci_unregister_driver(&lanai_driver);
 }
 
 module_init(lanai_module_init);