mmc: cavium-octeon: Add of_node_put() when breaking out of loop

mmc: cavium-octeon: Add of_node_put() when breaking out of loop

[ Upstream commit 087dff84b9b42ab81159cc97a73c38292804a044 ]

In octeon_mmc_probe(), we should call of_node_put() when breaking
out of for_each_child_of_node() which has increased and decreased
the refcount during each iteration.

Fixes: 042581375f8a ("mmc: cavium: Add MMC support for Octeon SOCs.")
Signed-off-by: Liang He <windhl@126.com>
Acked-by: Robert Richter <rric@kernel.org>
Link: https://lore.kernel.org/r/20220719095216.1241601-1-windhl@126.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>