[PATCH v13 66/70] riscv: use vma iterator for vdso

[Davidlohr Bueso]

On Mon, 22 Aug 2022, Liam Howlett wrote:

>From: "Liam R. Howlett" <Liam.Howlett at Oracle.com>
>
>Remove the linked list use in favour of the vma iterator.
>
>Signed-off-by: Liam R. Howlett <Liam.Howlett at oracle.com>

Reviewed-by: Davidlohr Bueso <dave at stgolabs.net>