mtd: mtdpart: Do not supply NULL to printf()

GCC compiler is not happy about NULL being supplied as printf() parameter:

drivers/mtd/mtdpart.c:693:34: error: ‘%s’ directive argument is null [-Werror=format-overflow=]

Move the code after the parser test for NULL, and drop the ternary completely.
The user can deduct this since when it's not NULL two messages will be printed.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Author: andy-shev

drivers/mtd/mtdpart.c

@@ -690,10 +690,9 @@ int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
 			parser = mtd_part_parser_get(*types);
 			if (!parser && !request_module("%s", *types))
 				parser = mtd_part_parser_get(*types);
-			pr_debug("%s: got parser %s\n", master->name,
-				parser ? parser->name : NULL);
 			if (!parser)
 				continue;
+			pr_debug("%s: got parser %s\n", master->name, parser->name);
 			ret = mtd_part_do_parse(parser, master, &pparts, data);
 			if (ret <= 0)
 				mtd_part_parser_put(parser);