sysfs: Improve readability by following the kernel coding style

The purpose of the if/else block is to select the right sysfs directory
entry to be used for the files creation. At a first look when you have
the file in front of you, it really seems like the "create_files()"
lines right after the block are badly indented and the "else" does not
guard. In practice the code is correct but lacks curly brackets to show
where the big if/else block actually ends. Add these brackets to comply
with the current kernel coding style and to ease the understanding of
the whole logic.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Message-ID: <20230614063018.2419043-2-miquel.raynal@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

fs/sysfs/group.c

@@ -142,8 +142,10 @@ static int internal_create_group(struct kobject *kobj, int update,
 				return PTR_ERR(kn);
 			}
 		}
-	} else
+	} else {
 		kn = kobj->sd;
+	}
+
 	kernfs_get(kn);
 	error = create_files(kn, kobj, uid, gid, grp, update);
 	if (error) {