free_irq() is missing in case of error, fix that.

Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>

Link: https://lore.kernel.org/r/20200606153103.GA17905@amd


Signed-off-by: Mark Brown <broonie@kernel.org>