RDMA/rxe: fix xa_alloc_cycle() error return value check again

Currently rxe_alloc checks ret to indicate error, but 1 is also a valid
return and just indicates that the allocation succeeded with a wrap.

Fix this by modifying the check to be < 0.

Link: https://lore.kernel.org/r/20220609070656.1446121-1-dzm91@hust.edu.cn


Fixes: 3225717f ("RDMA/rxe: Replace red-black trees by xarrays")
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Reviewed-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>