pinctrl: sunxi: Testing the wrong variable

Smatch complains that we dereference "map" before testing it for NULL
which is true. We should be testing "*map" instead. Also on the error
path, we should free *map and set it to NULL.

Signed-off-by: Dan Carpenter <[e-mail]>
Acked-by: Maxime Ripard <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/sunxi/pinctrl-sunxi.c

···
 	 * map array
 	 */
 	*map = krealloc(*map, i * sizeof(struct pinctrl_map), GFP_KERNEL);
-	if (!map)
+	if (!*map)
 		return -ENOMEM;
 
 	return 0;
 
 err_free_map:
-	kfree(map);
+	kfree(*map);
+	*map = NULL;
 	return ret;
 }