V4L/DVB (3202): Initialize the dvb-usb-device-pointer to NULL


- Initialize the the dvb-usb-device-pointer in the -init function to NULL,
to be sure that a dvb-usb-device was really initialized.

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-init.c b/drivers/media/dvb/dvb-usb/dvb-usb-init.c
index 2f9c363..2e23060 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-init.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-init.c
@@ -138,6 +138,9 @@
 
 	int ret = -ENOMEM,cold=0;
 
+	if (du != NULL)
+		*du = NULL;
+
 	if ((desc = dvb_usb_find_device(udev,props,&cold)) == NULL) {
 		deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
 		return -ENODEV;