linux-kernel - [PATCH] bcm: pm-mips: add missing of_node

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Date:   Mon, 13 Dec 2021 01:45:51 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] bcm: pm-mips: add missing of_node_put

From: Wang Qing <wangqing@...o.com>

Fix following coccicheck warning:
WARNING: Function "for_each_matching_node" 
should have of_node_put() before return.

Early exits from for_each_matching_node should decrement the
node reference counter.

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 drivers/soc/bcm/brcmstb/pm/pm-mips.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/bcm/brcmstb/pm/pm-mips.c b/drivers/soc/bcm/brcmstb/pm/pm-mips.c
index cdc3e38..2336e38
--- a/drivers/soc/bcm/brcmstb/pm/pm-mips.c
+++ b/drivers/soc/bcm/brcmstb/pm/pm-mips.c
@@ -404,12 +404,15 @@ static int brcmstb_pm_init(void)
 	for_each_matching_node(dn, ddr_phy_dt_ids) {
 		i = ctrl.num_memc;
 		if (i >= MAX_NUM_MEMC) {
+			of_node_put(dn);
 			pr_warn("Too many MEMCs (max %d)\n", MAX_NUM_MEMC);
 			break;
 		}
 		base = brcmstb_ioremap_node(dn, 0);
-		if (IS_ERR(base))
+		if (IS_ERR(base)) {
+			of_node_put(dn);
 			goto ddr_err;
+		}
 
 		ctrl.memcs[i].ddr_phy_base = base;
 		ctrl.num_memc++;
-- 
2.7.4