iwlwifi: mvm: check debugfs_dir ptr before use
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 v5.15.27 by commit 7de1ed755e1ace30d97a724bad32452ed86b653b, it was introduced in version v5.12 by commit 8c082a99edb997d7999eb7cdb648e47a2bf4a638. For more details please see the references link.