[PATCH 5.10 176/221] octeontx2-af: Fix memory leak of object buf

[Greg Kroah-Hartman]

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

[ Upstream commit 9e0a537d06fc36861e4f78d0a7df1fe2b3592714 ]

Currently the error return path when lfs fails to allocate is not free'ing
the memory allocated to buf. Fix this by adding the missing kfree.

Addresses-Coverity: ("Resource leak")
Fixes: f7884097141b ("octeontx2-af: Formatting debugfs entry rsrc_alloc.")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Acked-by: Sunil Goutham <sgoutham@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index c018121d4cc5..bc870bff14df 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -163,8 +163,10 @@ static ssize_t rvu_dbg_rsrc_attach_status(struct file *filp,
 		return -ENOSPC;
 
 	lfs = kzalloc(lf_str_size, GFP_KERNEL);
-	if (!lfs)
+	if (!lfs) {
+		kfree(buf);
 		return -ENOMEM;
+	}
 	off +=	scnprintf(&buf[off], buf_size - 1 - off, "%-*s", lf_str_size,
 			  "pcifunc");
 	for (index = 0; index < BLK_COUNT; index++)
-- 
2.30.1