anv/cmd_buffer: Fix bad indentation
A bunch of code was indented in such a way that it looked like it went with the if statement above but it definitely didn't. Reviewed-by:Iago Toral Quiroga <itoral@igalia.com> Cc: "17.0 13.0" <mesa-stable@lists.freedesktop.org> (cherry picked from commit 0fe3dcce)