Use devm_kzalloc() to make cleanup paths simpler. Also, checking
return value of devm_kzalloc() is added in order to check if the
allocation succeded.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NJohn Crispin <blogic@openwrt.org>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>