samples: configfs: consolidate local variables of the same type

Move local variables of the same type into a single line for better
readability.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

samples/configfs/configfs_sample.c

@@ -331,9 +331,8 @@ static struct configfs_subsystem *example_subsys[] = {
 
 static int __init configfs_example_init(void)
 {
-	int ret;
-	int i;
 	struct configfs_subsystem *subsys;
+	int ret, i;
 
 	for (i = 0; example_subsys[i]; i++) {
 		subsys = example_subsys[i];