linux-phytec-ti

RDMA/hns: Modify qp will return errno when qp type is illegal

Set for ret was missing in the error path here, resulting in incorrect
error code for modify_qp.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>