camerad: revert tbuffer dispatch change (#19589)

old-commit-hash: 15cd71707d

selfdrive/camerad/cameras/camera_common.cc

@@ -198,12 +198,11 @@ bool CameraBuf::acquire() {
   pool_acquire(&yuv_pool, cur_yuv_idx);
   pool_push(&yuv_pool, cur_yuv_idx);
 
-  tbuffer_dispatch(&ui_tb, cur_rgb_idx);
-
   return true;
 }
 
 void CameraBuf::release() {
+  tbuffer_dispatch(&ui_tb, cur_rgb_idx);
   pool_release(&yuv_pool, cur_yuv_idx);
 }