mlx4: Fixing use after free
In case of allocation failure, tried to use the promiscuous QP entry that was previously freed. Now freeing this entry only in case we will not put it back to the list of promiscuous entries. Reported-by: NDan Carpenter <error27@gmail.com> Signed-off-by: NYevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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