interconnect: exynos: fix node leak in probe PM QoS error path

commit b204bc6f289de9b7939910508bd0e7c8963a94e9 upstream.

Make sure to add the newly allocated interconnect node to the provider
before adding the PM QoS request so that the node is freed on errors.

Fixes: 9d76140dcd1c ("interconnect: Add generic interconnect driver for Exynos SoCs")
Cc: stable@vger.kernel.org      # 5.11
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230306075651.2449-15-johan+linaro@kernel.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/interconnect/samsung/exynos.c b/drivers/interconnect/samsung/exynos.c
index 6559d8cf80687bf8d4034f52ea1f150c33c5f13c..e706658994821dbebef86e0d087a65a856b7c25b 100644 (file)
--- a/drivers/interconnect/samsung/exynos.c
+++ b/drivers/interconnect/samsung/exynos.c
@@ -149,6 +149,9 @@ static int exynos_generic_icc_probe(struct platform_device *pdev)
                                 &priv->bus_clk_ratio))
                priv->bus_clk_ratio = EXYNOS_ICC_DEFAULT_BUS_CLK_RATIO;
 
+       icc_node->data = priv;
+       icc_node_add(icc_node, provider);
+
        /*
         * Register a PM QoS request for the parent (devfreq) device.
         */
@@ -157,9 +160,6 @@ static int exynos_generic_icc_probe(struct platform_device *pdev)
        if (ret < 0)
                goto err_node_del;
 
-       icc_node->data = priv;
-       icc_node_add(icc_node, provider);
-
        icc_parent_node = exynos_icc_get_parent(bus_dev->of_node);
        if (IS_ERR(icc_parent_node)) {
                ret = PTR_ERR(icc_parent_node);