[PATCH] em28xx-dvb: fix memleak in dvb_fini()

[Francesco Lavra <francescolavra@interfree.it>]

Hi,
this patch fixes a memory leak which occurs when an em28xx card with DVB
extension is unplugged or its DVB extension driver is unloaded. In
dvb_fini(), dev->dvb must be freed before being set to NULL, as is done
in dvb_init() in case of error.
Note that this bug is also present in the latest stable kernel release.
Regards,
Francesco

Signed-off-by: Francesco Lavra <francescolavra@interfree.it>

--- a/linux/drivers/media/video/em28xx/em28xx-dvb.c	2009-12-31 12:23:53.000000000 +0100
+++ b/linux/drivers/media/video/em28xx/em28xx-dvb.c	2009-12-31 12:23:56.000000000 +0100
@@ -607,6 +607,7 @@ static int dvb_fini(struct em28xx *dev)
 
 	if (dev->dvb) {
 		unregister_dvb(dev->dvb);
+		kfree(dev->dvb);
 		dev->dvb = NULL;
 	}