Merge branch 'mlx4-net'

Or Gerlitz says:

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mlx4 driver fixes for 3.19-rc2

Please push Maor's patch to -stable >= 3.17

Jack's fixes error-flow issues introduced in 3.19-rc1, no need for -stable.
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Signed-off-by: David S. Miller <davem@davemloft.net>