net/mlx5e: Don't modify CQ before it was created
Calling mlx5e_set_coalesce while the interface is down will result in modifying CQs that don't exist. Fixes: f62b8bb8 ('net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality') Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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