i40iw: Validate correct IRD/ORD connection parameters

Casting to u16 before validating IRD/ORD connection
parameters could cause recording wrong IRD/ORD values
in the cm_node. Validate the IRD/ORD parameters as
they are passed by the application before recording
them.

Fixes: f27b4746 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>