net/mlx5: fix initialization in secondary process

net/mlx5: fix initialization in secondary process

The changes introduced by previous commits (ones in fixes lines) made
secondaries attempt to reinitialize the Tx queue structures of the primary
instead of their own, for which they also do not allocate enough memory,
leading to crashes.

Fixes: 1d88ba171942 ("net/mlx5: refactor Tx data path")
Fixes: 21c8bb4928c9 ("net/mlx5: split Tx queue structure")

Signed-off-by: Olivier Gournet <ogournet@corp.free.fr>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>