ovl: fix use inode directly in rcu-walk mode
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 v5.15.86 by commit 1c65d50315dbe160ed483c68f0d044adb2630b47, it was introduced in version v5.7 by commit bccece1ead368149f90e05ad104dfbfda4422f5d. For more details please see the references link.