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

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>