net/mlx5: Simplify eq list traversal

EQ list is read only while finding the matching EQ.
Hence, avoid *_safe() version.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>