ASoC: sh: rz-ssi: Improve error handling in rz_ssi_probe() error path

[ Upstream commit c75ed9f54ce8d349fee557f2b471a4d637ed2a6b ]

We usually do cleanup in reverse order of init. Currently in case of
error rz_ssi_release_dma_channels() done in the reverse order. This
patch improves error handling in rz_ssi_probe() error path.

While at it, use "goto cleanup" style to reduce code duplication.

Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20220728092612.38858-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/sh/rz-ssi.c b/sound/soc/sh/rz-ssi.c
index 6d794ea..2e33a1f 100644 (file)
--- a/sound/soc/sh/rz-ssi.c
+++ b/sound/soc/sh/rz-ssi.c
@@ -1022,32 +1022,36 @@ static int rz_ssi_probe(struct platform_device *pdev)
 
        ssi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
        if (IS_ERR(ssi->rstc)) {
-               rz_ssi_release_dma_channels(ssi);
-               return PTR_ERR(ssi->rstc);
+               ret = PTR_ERR(ssi->rstc);
+               goto err_reset;
        }
 
        reset_control_deassert(ssi->rstc);
        pm_runtime_enable(&pdev->dev);
        ret = pm_runtime_resume_and_get(&pdev->dev);
        if (ret < 0) {
-               rz_ssi_release_dma_channels(ssi);
-               pm_runtime_disable(ssi->dev);
-               reset_control_assert(ssi->rstc);
-               return dev_err_probe(ssi->dev, ret, "pm_runtime_resume_and_get failed\n");
+               dev_err(&pdev->dev, "pm_runtime_resume_and_get failed\n");
+               goto err_pm;
        }
 
        ret = devm_snd_soc_register_component(&pdev->dev, &rz_ssi_soc_component,
                                              rz_ssi_soc_dai,
                                              ARRAY_SIZE(rz_ssi_soc_dai));
        if (ret < 0) {
-               rz_ssi_release_dma_channels(ssi);
-
-               pm_runtime_put(ssi->dev);
-               pm_runtime_disable(ssi->dev);
-               reset_control_assert(ssi->rstc);
                dev_err(&pdev->dev, "failed to register snd component\n");
+               goto err_snd_soc;
        }
 
+       return 0;
+
+err_snd_soc:
+       pm_runtime_put(ssi->dev);
+err_pm:
+       pm_runtime_disable(ssi->dev);
+       reset_control_assert(ssi->rstc);
+err_reset:
+       rz_ssi_release_dma_channels(ssi);
+
        return ret;
 }