Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times

Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times

This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
This ID is fixed in Linux Kernel version v4.19.262 by commit 671fee73e08ff415d36a7c16bdf238927df83884. For more details please see the references link.