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

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

···
 
 	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");