net: stmmac: dwmac_lib: remove unnecessary checks in dwmac_dma_reset()
it will check the return value of dwmac_dma_reset() in the stmmac_init_dma_engine() function and report an error if the return value is not zero. so don't need check here. Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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