CVE-2026-72456: apparmor: release exe file resources on path failure

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

apparmor: release exe file resources on path failure

getcurrentexepath() takes both an exefile reference and a path reference before resolving the path name. If aapathname() failed, it returned immediately and leaked both references.

Route the failure through the common cleanup path so fput() and pathput() always run after the references are acquired.