CVE-2026-74414: hfsplus: Remove the duplicate attr inode dirty marking action

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

hfsplus: Remove the duplicate attr inode dirty marking action

Syzbot reported a null-ptr-deref in [1]. If the attributes file is not loaded during system mount, a trigger occurs [1] when setxattr is executed in userspace.

Remove the first mark attr inode dirty operation.

[1] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] Call Trace: hfsplussetxattr+0x124/0x340 fs/hfsplus/xattr.c:555 hfsplustrustedsetxattr+0x40/0x60 fs/hfsplus/xattrtrusted.c:30 vfssetxattr+0x43c/0x480 fs/xattr.c:218 vfssetxattrnoperm+0x12d/0x660 fs/xattr.c:252 vfssetxattr+0x163/0x360 fs/xattr.c:339 dosetxattr fs/xattr.c:654 [inline]