radv: fix picking the method for resolve subpass

The source and destination image parameters were swapped.

No CTS changes on Polaris10, but I suspect this might
fix something.

Fixes: 2a04f548 ("radv/meta: select resolve paths")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
(cherry picked from commit 0babc8e5)