pinctrl: ti: fix error return code of ti_iodelay_dt_node_to_map()

when devm_kcalloc fails, use -ENOMEM instead of -EINVAL,
and consistent with other devm_kcalloc return values.

Signed-off-by: Junlin Yang <yangjunlin@yulong.com>
Link: https://lore.kernel.org/r/20210330062655.1027-1-angkery@163.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>