net: mediatek: fix missing free of scratch memory
Scratch memory gets allocated in mtk_init_fq_dma() but the corresponding code to free it is missing inside mtk_dma_free() causing a memory leak. With this patch applied, we can run ifconfig up/down several thousand times without any problems. Signed-off-by: NJohn Crispin <john@phrozen.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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