pinctrl: sophgo: fix double free in cv1800_pctrl_dt_node_to_map()

pinctrl: sophgo: fix double free in cv1800_pctrl_dt_node_to_map()

'map' is allocated using devm_* which takes care of freeing the allocated
data, but in error paths there is a call to pinctrl_utils_free_map()
which also does kfree(map) which leads to a double free.

Use kcalloc() instead of devm_kcalloc() as freeing is manually handled.

Fixes: a29d8e93e710 ("pinctrl: sophgo: add support for CV1800B SoC")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Link: https://lore.kernel.org/20241010111830.3474719-1-harshit.m.mogalapalli@oracle.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>