drm/i915: pass a pointer for tlb seqno at vma_invalidate_tlb()

drm/i915: pass a pointer for tlb seqno at vma_invalidate_tlb()

WRITE_ONCE() should happen at the original var, not on a local
copy of it.

Cc: [email protected]
Fixes: 59eda6ce824e ("drm/i915/gt: Batch TLB invalidations")
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Andi Shyti <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
[added cc-stable while merging it]
Link: https://patchwork.freedesktop.org/patch/msgid/f9550e6bacea10131ff40dd8981b69eb9251cdcd.1659598090.git.mchehab@kernel.org
(cherry picked from commit 3d037d99e61a1e7a3ae3d214146d88db349dd19f)
Signed-off-by: Rodrigo Vivi <[email protected]>