[ Upstream commit 14d338a857f05f894ba3badd9e6d3039c68b8180 ]

NULL check before some freeing functions is not needed.
Signed-off-by: NThomas Meyer <thomas@m3y3r.de>
Reviewed-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>