[PATCH] RDMA/uverbs: update outdated reference to remove_commit_idr_uobject()

[Kexin Sun]

The function remove_commit_idr_uobject() was split into
destroy_hw_idr_uobject() and remove_handle_idr_uobject() by
commit 0f50d88a6e9a ("IB/uverbs: Allow all DESTROY commands
to succeed after disassociate").  The kref put that the
comment refers to now lives in remove_handle_idr_uobject().
Update the stale reference.

Also update "allocated this IDR with a NULL object" to
"allocated this XArray entry with a NULL pointer" to match
the actual data structure (xa_store) and the wording already
used two lines below ("transfers our kref on uobj to the
XArray").

Assisted-by: unnamed:deepseek-v3.2 coccinelle
Signed-off-by: Kexin Sun <kexinsun@xxxxxxxxxxxxxxxx>
---
 drivers/infiniband/core/rdma_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/rdma_core.c b/drivers/infiniband/core/rdma_core.c
index 3e0a8b9cd288..5018ec837056 100644
--- a/drivers/infiniband/core/rdma_core.c
+++ b/drivers/infiniband/core/rdma_core.c
@@ -590,11 +590,11 @@ static void alloc_commit_idr_uobject(struct ib_uobject *uobj)
 	void *old;
 
 	/*
-	 * We already allocated this IDR with a NULL object, so
+	 * We already allocated this XArray entry with a NULL pointer, so
 	 * this shouldn't fail.
 	 *
 	 * NOTE: Storing the uobj transfers our kref on uobj to the XArray.
-	 * It will be put by remove_commit_idr_uobject()
+	 * It will be put by remove_handle_idr_uobject()
 	 */
 	old = xa_store(&ufile->idr, uobj->id, uobj, GFP_KERNEL);
 	WARN_ON(old != NULL);
-- 
2.25.1