[PATCH] RDMA/erdma: Fix error code in erdma_create_scatter_mtt()

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The erdma_create_scatter_mtt() function is supposed to return error
pointers.  Returning NULL will lead to an Oops.

Fixes: ed10435d3583 ("RDMA/erdma: Implement hierarchical MTT")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 drivers/infiniband/hw/erdma/erdma_verbs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/erdma/erdma_verbs.c b/drivers/infiniband/hw/erdma/erdma_verbs.c
index dcccb6015232..70eaed59a67c 100644
--- a/drivers/infiniband/hw/erdma/erdma_verbs.c
+++ b/drivers/infiniband/hw/erdma/erdma_verbs.c
@@ -655,7 +655,7 @@ static struct erdma_mtt *erdma_create_scatter_mtt(struct erdma_dev *dev,
 
 	mtt = kzalloc(sizeof(*mtt), GFP_KERNEL);
 	if (!mtt)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	mtt->size = ALIGN(size, PAGE_SIZE);
 	mtt->buf = vzalloc(mtt->size);
-- 
2.39.2




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