Fix a use-after-free bug in mtk_wed_setup_tc_block_cb()
which leads to kernel panic when setup multiple ap
interfaces on one band of mt798x.
Signed-off-by: Zheng Zhang <everything411@qq.com>
Link: https://github.com/openwrt/openwrt/pull/16118
Signed-off-by: Robert Marko <robimarko@gmail.com>
