kernel: media: usb: siano: Fix use after free bugs caused by do_submit_urb

A use-after-free vulnerability was found in the Linux kernel's Siano USB driver for digital TV receivers. In dosubmiturb, memory allocated during smsusbprobe can be freed by smsusbtermdevice while URB work items are still referencing it. This leads to a use-after-free condition when worker thread...