i2c: mux: reg: put away the parent i2c adapter on probe failure

It is only prudent to let go of resources that are not used.

Fixes: b3fdd32799d8 ("i2c: mux: Add register-based mux i2c-mux-reg")
Signed-off-by: Peter Rosin <peda@axentia.se>

1 files changed, 12 insertions, 5 deletions

diff --git a/drivers/i2c/muxes/i2c-mux-reg.c b/drivers/i2c/muxes/i2c-mux-reg.c
index 406d5059072c..11974e3cd1e5 100644
--- a/drivers/i2c/muxes/i2c-mux-reg.c
+++ b/drivers/i2c/muxes/i2c-mux-reg.c
@@ -196,20 +196,25 @@ static int i2c_mux_reg_probe(struct platform_device *pdev)
                 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
                 mux->data.reg_size = resource_size(res);
                 mux->data.reg = devm_ioremap_resource(&pdev->dev, res);
-                if (IS_ERR(mux->data.reg))
-                        return PTR_ERR(mux->data.reg);
+                if (IS_ERR(mux->data.reg)) {
+                        ret = PTR_ERR(mux->data.reg);
+                        goto err_put_parent;
+                }
         }
 
         if (mux->data.reg_size != 4 && mux->data.reg_size != 2 &&
             mux->data.reg_size != 1) {
                 dev_err(&pdev->dev, "Invalid register size\n");
-                return -EINVAL;
+                ret = -EINVAL;
+                goto err_put_parent;
         }
 
         muxc = i2c_mux_alloc(parent, &pdev->dev, mux->data.n_values, 0, 0,
                              i2c_mux_reg_select, NULL);
-        if (!muxc)
-                return -ENOMEM;
+        if (!muxc) {
+                ret = -ENOMEM;
+                goto err_put_parent;
+        }
         muxc->priv = mux;
 
         platform_set_drvdata(pdev, muxc);
@@ -233,6 +238,8 @@ static int i2c_mux_reg_probe(struct platform_device *pdev)
 
 add_adapter_failed:
         i2c_mux_del_adapters(muxc);
+err_put_parent:
+        i2c_put_adapter(parent);
 
         return ret;
 }