net/mlx4_core: Fix wrong calculation of free counters
commit 0bb9fc4f upstream. The field res_free indicates the total number of counters which are available for allocation (reserved and unreserved). Fixed a bug where the reserved counters were subtracted from res_free before any allocation was performed. Before this fix, free counters which were not reserved could not be allocated. Fixes: 9de92c60 ("net/mlx4_core: Adjust counter grant policy in the resource tracker") Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reviewed-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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