[PATCH 2/4] clk: mvebu: Fix a another memory leak in an error handling path

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: mturquette@baylibre.com, sboyd@kernel.org,
	gregory.clement@bootlin.com, thomas.petazzoni@free-electrons.com
Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH 2/4] clk: mvebu: Fix a another memory leak in an error handling path
Date: Fri, 23 Apr 2021 08:25:10 +0200	[thread overview]
Message-ID: <5f1ba3fb1950a2743ec8c4baa4b4925f134c0f28.1619157996.git.christophe.jaillet@wanadoo.fr> (raw)
In-Reply-To: <cover.1619157996.git.christophe.jaillet@wanadoo.fr>

If we exit the for_each_of_cpu_node loop early, the reference on the
current node must be decremented, otherwise there is a leak.

Fixes: ab8ba01b3fe5 ("clk: mvebu: add armada-370-xp CPU specific clocks")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/clk/mvebu/clk-cpu.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
index a11d7273fcc7..9a5c2aec6ec2 100644
--- a/drivers/clk/mvebu/clk-cpu.c
+++ b/drivers/clk/mvebu/clk-cpu.c
@@ -199,11 +199,14 @@ static void __init of_cpu_clk_setup(struct device_node *node)
 		int cpu, err;
 
 		err = of_property_read_u32(dn, "reg", &cpu);
-		if (WARN_ON(err))
+		if (WARN_ON(err)) {
+			of_node_put(dn);
 			goto bail_out;
+		}
 
 		clk_name = kasprintf(GFP_KERNEL, "cpu%d", cpu);
 		if (WARN_ON(!clk_name)) {
+			of_node_put(dn);
 			goto bail_out;
 		}
 
@@ -222,8 +225,10 @@ static void __init of_cpu_clk_setup(struct device_node *node)
 		init.num_parents = 1;
 
 		clk = clk_register(NULL, &cpuclk[cpu].hw);
-		if (WARN_ON(IS_ERR(clk)))
+		if (WARN_ON(IS_ERR(clk))) {
+			of_node_put(dn);
 			goto bail_out;
+		}
 		clks[cpu] = clk;
 	}
 	clk_data.clk_num = MAX_CPU;
-- 
2.27.0

