radv: fix the dynamic buffer index in vkCmdBindDescriptorSets

This fixes the wrong dynamic buffer descriptors being updated when
firstSet > 0.

Cc: 17.0 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Fredrik Höglund <fredrik@kde.org>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
(cherry picked from commit 0941d1a574f46c558b0037be81d9a57004f4290b)
1 file changed