The common MLX5 probe function parses first the devargs and save them in
a dictionary.
It gets structure called "devargs" as a member of EAL device containing
all needed information.
When "devargs" structure is invalid, the function avoids parsing it.
However, when it valid but its field "args" is invalid, the function
tries to parse it and dereference to NULL pointer.
This patch adds check to avoid this NULL dereferencing.
Fixes: a729d2f093e9 ("common/mlx5: refactor devargs management")
Cc: stable@dpdk.org
Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
5fb0c63d6d