RDMA/hns: Fix an error code in hns_roce_v2_init_eq_table()

[ Upstream commit f1a315420e79fe5c077fa119db9439ffabd2cda2 ]

The error code isn't set on this path.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>