[PATCH v2 1/2] cdx: call of_node_put() on error path

From: Dan Carpenter <dan.carpenter@linaro.org>
To: Abhijit Gangurde <abhijit.gangurde@amd.com>
Cc: Nipun Gupta <nipun.gupta@amd.com>,
	Nikhil Agarwal <nikhil.agarwal@amd.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH v2 1/2] cdx: call of_node_put() on error path
Date: Tue, 2 Jan 2024 16:10:21 +0300	[thread overview]
Message-ID: <2e66efc4-a13a-4774-8c9d-763455fe4834@moroto.mountain> (raw)

Add a missing call to of_node_put(np) on error.

There was a second error path where "np" was NULL, but that situation is
impossible.  The for_each_compatible_node() loop iterator is always
non-NULL.  Just deleted that error path.

Fixes: 54b406e10f03 ("cdx: Remove cdx controller list from cdx bus system")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
v2: Christophe JAILLET pointed out this bug so I added this patch
    to the patchset.

 drivers/cdx/cdx.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/cdx/cdx.c b/drivers/cdx/cdx.c
index d84d153078d7..40035dd2e299 100644
--- a/drivers/cdx/cdx.c
+++ b/drivers/cdx/cdx.c
@@ -572,12 +572,11 @@ static ssize_t rescan_store(const struct bus_type *bus,
 
 	/* Rescan all the devices */
 	for_each_compatible_node(np, NULL, compat_node_name) {
-		if (!np)
-			return -EINVAL;
-
 		pd = of_find_device_by_node(np);
-		if (!pd)
+		if (!pd) {
+			of_node_put(np);
 			return -EINVAL;
+		}
 
 		cdx = platform_get_drvdata(pd);
 		if (cdx && cdx->controller_registered && cdx->ops->scan)
-- 
2.42.0

