drivers: mcb: fix resource leak in mcb_probe()
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 f3686e5e8de0a03c8e70e3ee0ce3078fed612909, it was introduced in version v4.7 by commit 7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e. For more details please see the references link.