net/mlx4_en: Fix wrong return value on ioctl EEPROM query failure

net/mlx4_en: Fix wrong return value on ioctl EEPROM query failure

[ Upstream commit 5301ba81dc9d662b61de168df93884f89e233806 ]

The ioctl EEPROM query wrongly returns success on read failures, fix
that by returning the appropriate error code.

Fixes: d215e1e08ab7 ("ethtool, net/mlx4_en: Cable info, get_module_info/eeprom ethtool support")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20220606115718.14233-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>