[BUG]drivers: usb: serial: mos7840.c: dangling pointer in function mos7840_open

[nil Yi <teroincn@xxxxxxxxx>]

Hi, there is a dangling pointer in mos7840_port->write_urb_pool[j]  in function
mos7840_open in v5.14-rc3.

in function mos7840_open err path :

717: err:
718: for (j = 0; j < NUM_URBS; ++j) {
719: urb = mos7840_port->write_urb_pool[j];
720:  if (!urb)
721:     continue;
722: kfree(urb->transfer_buffer);
723:  usb_free_urb(urb);
}

leave a dangling pointer here,  I'm not sure whether it  can be
triggered somewhere.

Any feedback would be appreciated, thanks :)


Best wishes,
Nil Yi