arm64: mm: move dma_contiguous_reserve() to be after paging_init()

[Mike Kravetz]

On 9/16/20 5:19 PM, Nick Desaulniers wrote:
> It looks like that change referenced may also break arm32 boots with today's
> next?
> 
> The following allows me to boot, but I have no idea if it's incorrect or not.

Thanks Nick,

The referenced commit was pulled from Andrew's tree and subsequent versions
of next.

I'm looking into other architectures as this is dependent on where in arch
specific boot process first cma call is made.  Hopefully, there is a some
way to do this without potentially touching a bunch of arch code.
-- 
Mike Kravetz