[PATCH v3 2/2] i2c: qcom-geni: Simplify error handling in probe function

[Andi Shyti <andi.shyti@kernel.org>]

Avoid repeating the error handling pattern:

        geni_se_resources_off(&gi2c->se);
        clk_disable_unprepare(gi2c->core_clk);
        return;

Introduce a single 'goto' exit label for cleanup in case of
errors. While there are currently two distinct exit points, there
is no overlap in their handling, allowing both branches to
coexist cleanly.

Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
---
 drivers/i2c/busses/i2c-qcom-geni.c | 33 ++++++++++++++++--------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index 01db24188e29..7bbd478171e0 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -867,14 +867,13 @@ static int geni_i2c_probe(struct platform_device *pdev)
 
 	ret = geni_se_resources_on(&gi2c->se);
 	if (ret) {
-		clk_disable_unprepare(gi2c->core_clk);
-		return dev_err_probe(dev, ret, "Error turning on resources\n");
+		dev_err_probe(dev, ret, "Error turning on resources\n");
+		goto err_clk;
 	}
 	proto = geni_se_read_proto(&gi2c->se);
 	if (proto != GENI_SE_I2C) {
-		geni_se_resources_off(&gi2c->se);
-		clk_disable_unprepare(gi2c->core_clk);
-		return dev_err_probe(dev, -ENXIO, "Invalid proto %d\n", proto);
+		ret = dev_err_probe(dev, -ENXIO, "Invalid proto %d\n", proto);
+		goto err_resources;
 	}
 
 	if (desc && desc->no_dma_support)
@@ -886,11 +885,8 @@ static int geni_i2c_probe(struct platform_device *pdev)
 		/* FIFO is disabled, so we can only use GPI DMA */
 		gi2c->gpi_mode = true;
 		ret = setup_gpi_dma(gi2c);
-		if (ret) {
-			geni_se_resources_off(&gi2c->se);
-			clk_disable_unprepare(gi2c->core_clk);
-			return ret;
-		}
+		if (ret)
+			goto err_resources;
 
 		dev_dbg(dev, "Using GPI DMA mode for I2C\n");
 	} else {
@@ -902,10 +898,9 @@ static int geni_i2c_probe(struct platform_device *pdev)
 			tx_depth = desc->tx_fifo_depth;
 
 		if (!tx_depth) {
-			geni_se_resources_off(&gi2c->se);
-			clk_disable_unprepare(gi2c->core_clk);
-			return dev_err_probe(dev, -EINVAL,
-					     "Invalid TX FIFO depth\n");
+			ret = dev_err_probe(dev, -EINVAL,
+					    "Invalid TX FIFO depth\n");
+			goto err_resources;
 		}
 
 		gi2c->tx_wm = tx_depth - 1;
@@ -942,10 +937,18 @@ static int geni_i2c_probe(struct platform_device *pdev)
 
 	dev_dbg(dev, "Geni-I2C adaptor successfully added\n");
 
-	return 0;
+	return ret;
+
+err_resources:
+	geni_se_resources_off(&gi2c->se);
+err_clk:
+	clk_disable_unprepare(gi2c->core_clk);
+
+	return ret;
 
 err_dma:
 	release_gpi_dma(gi2c);
+
 	return ret;
 }
 
-- 
2.45.2