thermal/drivers/k3_j72xx_bandgap: Fix ref_table memory leak during probe

If an error occurs in the k3_j72xx_bandgap_probe() function the memory
allocated to the 'ref_table' will not be released.

Add a err_free_ref_table step to the error path to free 'ref_table'

Fixes: 72b3fc61c752 ("thermal: k3_j72xx_bandgap: Add the bandgap driver support")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Link: https://lore.kernel.org/r/20220525213617.30002-1-bb@ti.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/thermal/k3_j72xx_bandgap.c

@@ -433,7 +433,7 @@ static int k3_j72xx_bandgap_probe(struct platform_device *pdev)
 				     GFP_KERNEL);
 	if (!derived_table) {
 		ret = -ENOMEM;
-		goto err_alloc;
+		goto err_free_ref_table;
 	}
 
 	/* Workaround not needed if bit30/bit31 is set even for J721e */
@@ -483,7 +483,7 @@ static int k3_j72xx_bandgap_probe(struct platform_device *pdev)
 		if (IS_ERR(ti_thermal)) {
 			dev_err(bgp->dev, "thermal zone device is NULL\n");
 			ret = PTR_ERR(ti_thermal);
-			goto err_alloc;
+			goto err_free_ref_table;
 		}
 	}
 
@@ -514,6 +514,9 @@ static int k3_j72xx_bandgap_probe(struct platform_device *pdev)
 
 	return 0;
 
+err_free_ref_table:
+	kfree(ref_table);
+
 err_alloc:
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);