V4L/DVB (9603): dvb-ttusb-budget: Add validation for ttusb_alloc_iso_urbs

Added validation for ttusb_alloc_iso_urbs
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/ttusb-budget/dvb-ttusb-budget.c

@@ -1665,7 +1665,14 @@ static int ttusb_probe(struct usb_interface *intf, const struct usb_device_id *i
 
 	ttusb_setup_interfaces(ttusb);
 
-	ttusb_alloc_iso_urbs(ttusb);
+	result = ttusb_alloc_iso_urbs(ttusb);
+	if (result < 0) {
+		dprintk("%s: ttusb_alloc_iso_urbs - failed\n", __func__);
+		mutex_unlock(&ttusb->semi2c);
+		kfree(ttusb);
+		return result;
+	}
+
 	if (ttusb_init_controller(ttusb))
 		printk("ttusb_init_controller: error\n");