[PATCH 1/1] RDMA/rxe: Return the correct errno

[Zhu Yanjun <yanjun.zhu@linux.dev>]

In the function __rxe_add_to_pool, the function xa_alloc_cyclic is
called. The return value of the function xa_alloc_cyclic is as below:
"
 Return: 0 if the allocation succeeded without wrapping.  1 if the
 allocation succeeded after wrapping, -ENOMEM if memory could not be
 allocated or -EBUSY if there are no free entries in @limit.
"
But now the function __rxe_add_to_pool only returns -EINVAL. All the
returned error value should be returned to the caller.

Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
---
 drivers/infiniband/sw/rxe/rxe_pool.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_pool.c b/drivers/infiniband/sw/rxe/rxe_pool.c
index 6215c6de3a84..43ba0277bd7b 100644
--- a/drivers/infiniband/sw/rxe/rxe_pool.c
+++ b/drivers/infiniband/sw/rxe/rxe_pool.c
@@ -122,8 +122,10 @@ int __rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_elem *elem,
 	int err;
 	gfp_t gfp_flags;
 
-	if (atomic_inc_return(&pool->num_elem) > pool->max_elem)
+	if (atomic_inc_return(&pool->num_elem) > pool->max_elem) {
+		err = -EINVAL;
 		goto err_cnt;
+	}
 
 	elem->pool = pool;
 	elem->obj = (u8 *)elem - pool->elem_offset;
@@ -147,7 +149,7 @@ int __rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_elem *elem,
 
 err_cnt:
 	atomic_dec(&pool->num_elem);
-	return -EINVAL;
+	return err;
 }
 
 void *rxe_pool_get_index(struct rxe_pool *pool, u32 index)
-- 
2.34.1