amd-xgbe: fix a couple timeout loops
At the end of the loop we test "if (!count)" but because "count--" is a post-op then the loop will end with count set to -1. I have fixed this by changing it to --count. Fixes: c5aa9e3b ('amd-xgbe: Initial AMD 10GbE platform driver') Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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