Remove the argument since it is not used in the function.

Link: https://lore.kernel.org/r/20201023074353.21946-13-jinpu.wang@cloud.ionos.comSigned-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>