Fixed order of usb_alloc_urb pointer validation.
Cc: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
 
        for (i = 0; i < W9968CF_URBS; i++) {
                urb = usb_alloc_urb(W9968CF_ISO_PACKETS, GFP_KERNEL);
-               cam->urb[i] = urb;
                if (!urb) {
                        for (j = 0; j < i; j++)
                                usb_free_urb(cam->urb[j]);
                        return -ENOMEM;
                }
 
+               cam->urb[i] = urb;
                urb->dev = udev;
                urb->context = (void*)cam;
                urb->pipe = usb_rcvisocpipe(udev, 1);