RDMA/rxe: Fix incorrect return value of rxe_odp_atomic_op()

rxe_mr_do_atomic_op() returns enum resp_states numbers, so the ODP
counterpart must not return raw errno codes.

Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Link: https://patch.msgid.link/20250313064540.2619115-1-matsuda-daisuke@fujitsu.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>