RDMA/qedr: Fix rdma_type initialization

Initialize the rdma_type (iWARP or RoCE) which is set according to
device configuration in qed.

Fixes: e6a38c54

 ("RDMA/qedr: Add support for registering an iWARP device")

Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>