misc: Fix irq leak in max8997_muic_probe error path

Current code does not properly free allocated irqs if request_threaded_irq
returns error, fix it.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>