[PATCH] omapdrm: dss: drop unneeded of_node_put() on ref passed to of_get_next_parent()

[Matthijs van Duin]

> [    8.842806] OF: ERROR: Bad of_node_put() on /encoder/ports/port at 1/endpoint
> [    8.843014] [<bf889433>] (omapdss_of_find_source_for_first_ep [omapdss])

I can confirm that reverting 2ab9f5879162 fixes this regression,
tested on omap5-uevm.

Matthijs