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In brcmstb_biuctrl_init(), of_find_compatible_node() will return a
node pointer with refcount incremented. We should use of_node_put()
in each fail path or when it is not used anymore.
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>