net/mlx5: Compare with old_dest param to modify rule destination

The rule destination must be compared with the old_dest passed in.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/24adc60d05d7492359ba343c6da1ebbe9fe284f6.1690802064.git.leon@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>