drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c

drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c

[ Upstream commit 6e4ef620fbaa19e65980629db2e862e04adf5f47 ]

In qoriq_cpufreq_probe(), of_find_matching_node() will return a
node pointer with refcount incremented. We should use of_node_put()
when it is not used anymore.

Fixes: 5c1f0af85f55 ("cpufreq: qoriq: convert to a platform driver")
[ Viresh: Fixed Author's name in commit log ]
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>