CVE-2022-50565 wifi: plfxlc: fix potential memory leak in __lf_x_usb_enable_rx()

In the Linux kernel, the following vulnerability has been resolved: wifi: plfxlc: fix potential memory leak in lfxusbenablerx urbs does not be freed in exception paths in lfxusbenablerx. That will trigger memory leak. To fix it, add kfree for urbs within "error" label. Compile tested only...