soc/tegra: bpmp: Actually free memory on error path

Within the error path, genpd->domains has not been set, so we need
to pass the domains variable to kfree instead.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/soc/tegra/powergate-bpmp.c

@@ -286,7 +286,7 @@ remove:
 		tegra_powergate_remove(powergate);
 	}
 
-	kfree(genpd->domains);
+	kfree(domains);
 	return err;
 }