quoted

Seems like a good idea though. But please keep the local variable
declaration in the current place which is bit cleaner and reduces
code churn as well.

Though include/linux/cleanup.h suggests to "always define and assign
variables in one statement" to avoid potential interdependency problem
with lock, this is not concerned in arm_trbe_alloc_buffer().

So I bias to Anshuman's suggestion of declaring variables at the top
of the function, as this is the style widely used in the kernel.

Does anything hinder you to follow the mentioned cleanup advice more?

Regards,
Markus