V4L/DVB (4711): Radio: No need to return void

The module_exit function has return-type void and
pci_unregister_driver() returns void anyway.

Signed-off-by: Tobias Klauser <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/radio/radio-gemtek-pci.c

···
 
 static void __exit gemtek_pci_cleanup_module( void )
 {
-	return pci_unregister_driver( &gemtek_pci_driver );
+	pci_unregister_driver(&gemtek_pci_driver);
 }
 
 MODULE_AUTHOR( "Vladimir Shebordaev <[e-mail]>" );