freedreno: fix memory leak

Otherwise blitter would still hold a ref to, for example, sampler-
views.

To reproduce:

   glmark2 -b desktop:duration=2 --run-forever

Fixes: a8e6734 ("freedreno: support for using generic clear path")
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
(cherry picked from commit c03f6f12bbe6fb491c9362b3fd5d39b9f4fd05fd)
1 file changed