clk: meson: Hold reference returned by of_get_parent()

clk: meson: Hold reference returned by of_get_parent()

[ Upstream commit 45d5a8ba3b57181b6a0986ca164da0f8f36a8758 ]

We should hold the reference returned by of_get_parent() and use it
to call of_node_put() for refcount balance.

Fixes: 208516e185ba ("clk: meson: aoclk: refactor common code into dedicated file")
Fixes: 3a5abec50417 ("clk: meson: factorise meson64 peripheral clock controller drivers")
Fixes: de523307e1bb ("clk: meson: meson8b: use the HHI syscon if available")
Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220628141038.168383-1-windhl@126.com
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>