vrend: Use the sample count that was read before

This was bogus from the beginning.

Fixes: c0e0274e8c
   virgl: Add method to query supported MSAA samples and positions

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/vrend_renderer.c

@@ -8100,7 +8100,7 @@ static void vrend_renderer_fill_caps_v2(int gl_ver, int gles_ver,  union virgl_c
       glGetIntegerv(GL_MAX_IMAGE_SAMPLES, (GLint*)&caps->v2.max_image_samples);
    }
 
-   caps->v1.max_samples = vrend_renderer_query_multisample_caps(max, &caps->v2);
+   caps->v1.max_samples = vrend_renderer_query_multisample_caps(caps->v1.max_samples, &caps->v2);
 
    caps->v2.capability_bits |= VIRGL_CAP_TGSI_INVARIANT | VIRGL_CAP_SET_MIN_SAMPLES | VIRGL_CAP_TGSI_PRECISE;