CVE-2026-68210

In the Linux kernel, the following vulnerability has been resolved:

media: stm32: dcmi: unregister notifier on probe failure

dcmi_graph_init() registers the async notifier before dcmi_probe() toggles
the reset line. If reset_control_assert() or reset_control_deassert()
fails afterwards, probe returns through err_cleanup and the driver core
will not call dcmi_remove().

Unregister the notifier before cleaning it up on that error path,
matching the successful remove path and the V4L2 async notifier lifetime
rules.

[hverkuil: added Fixes tag]