[media] cx23885: Don't leak firmware in cx23885_card_setup()

We leak the memory allocated to 'fw' (the firmware) when the variable goes
out of scope.
Fix the leak by calling release_firmware(fw) before 'fw' goes out of
scope.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/cx23885/cx23885-cards.c

@@ -1399,6 +1399,7 @@ void cx23885_card_setup(struct cx23885_dev *dev)
 		else
 			altera_init(&netup_config, fw);
 
+		release_firmware(fw);
 		break;
 	}
 	}