thermal: rcar_gen3_thermal: check that TSC exists before memory allocation

Move the check for a TSC resource before allocating memory for a new
TSC. If no TSC is found there is little point in allocating memory for
it.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
index cb5c362c0000..9b6bc03dd142 100644
--- a/drivers/thermal/rcar_gen3_thermal.c
+++ b/drivers/thermal/rcar_gen3_thermal.c
@@ -276,16 +276,16 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
         for (i = 0; i < TSC_MAX_NUM; i++) {
                 struct rcar_gen3_thermal_tsc *tsc;
 
+                res = platform_get_resource(pdev, IORESOURCE_MEM, i);
+                if (!res)
+                        break;
+
                 tsc = devm_kzalloc(dev, sizeof(*tsc), GFP_KERNEL);
                 if (!tsc) {
                         ret = -ENOMEM;
                         goto error_unregister;
                 }
 
-                res = platform_get_resource(pdev, IORESOURCE_MEM, i);
-                if (!res)
-                        break;
-
                 tsc->base = devm_ioremap_resource(dev, res);
                 if (IS_ERR(tsc->base)) {
                         ret = PTR_ERR(tsc->base);