st/va: fix misplaced closing bracket

It's been like this since the code was introduced.

Fixes: 86eb4131a9 (st/va: add headless support, i.e. VA_DISPLAY_DRM)
Cc: <mesa-stable@lists.freedesktop.org>
Cc: Julien Isorce <julien.isorce@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

src/gallium/state_trackers/va/context.c

@@ -136,8 +136,8 @@ VA_DRIVER_INIT_FUNC(VADriverContextP ctx)
       drv->vscreen = vl_drm_screen_create(drm_info->fd);
       if (!drv->vscreen)
          goto error_screen;
-      }
       break;
+   }
    default:
       FREE(drv);
       return VA_STATUS_ERROR_INVALID_DISPLAY;