RDMA: Group create AH arguments in struct

Following patch adds additional argument to the create AH function, so it
make sense to group ah_attr and flags arguments in struct.

Link: https://lore.kernel.org/r/20200430192146.12863-13-maorg@mellanox.com
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Acked-by: Devesh Sharma <devesh.sharma@broadcom.com>
Acked-by: Gal Pressman <galpress@amazon.com>
Acked-by: Weihang Li <liweihang@huawei.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/qedr/verbs.h

@@ -70,7 +70,7 @@ int qedr_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr);
 void qedr_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata);
 int qedr_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
 		       const struct ib_recv_wr **bad_recv_wr);
-int qedr_create_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr, u32 flags,
+int qedr_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
 		   struct ib_udata *udata);
 void qedr_destroy_ah(struct ib_ah *ibah, u32 flags);