net: ll_temac: Add more error handling of dma_map_single() calls
This adds error handling to the remaining dma_map_single() calls, so that behavior is well defined if/when we run out of DMA memory. Fixes: 92744989 ("net: add Xilinx ll_temac device driver") Signed-off-by: NEsben Haabendal <esben@geanix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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