net/mlx4_en: Using positive error value for unsigned
net/mlx4_en: Using positive error value for unsigned

Using a positive value for error: MLX4_NET_TRANS_RULE_NUM instead
of -EPROTONOSUPPORT, to remove compilation warning.

Signed-off-by: Eyal Perry <62c63050c5064c67322c551d948315560043cc99@mellanox.com>
Signed-off-by: Amir Vadai <3780882ee6ebd9d2578cec41b2fe98d5a68e15d1@mellanox.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs