PCI: rcar: Don't disable/unprepare clocks on prepare/enable failure
If clk_prepare_enable() fails, we must not call clk_disable_unprepare() in the error path. Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
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