remove unnecessary struct tags

tictactoe_game.c

@@ -7,7 +7,7 @@
 /*
  * Initializes a new game instance.
  */
-int tictactoe_game_init(ttt_game_t *game)
+void tictactoe_game_init(ttt_game_t *game)
 {
 	game->next_turn = 'X';
 	game->winner = 0;
@@ -16,8 +16,6 @@ int tictactoe_game_init(ttt_game_t *game)
 			game->board[x][y] = ' ';
 		}
 	}
-
-	return 0;
 }
 
 /*

tictactoe_game.h

@@ -3,13 +3,13 @@
 
 #include <linux/types.h>
 
-typedef struct tictactoe_game {
+typedef struct {
 	char next_turn;
 	char winner;
 	char board[3][3];
 } ttt_game_t;
 
-int tictactoe_game_init(ttt_game_t *game);
+void tictactoe_game_init(ttt_game_t *game);
 int tictactoe_game_make_turn(ttt_game_t *game, size_t x, size_t y);
 int tictactoe_game_snprint(ttt_game_t *game, char *buf, size_t len);
 

tictactoe_internal.h

@@ -10,7 +10,7 @@
 #define tictactoe_error(format, ...) \
 	pr_err("%s: " format, __func__, ##__VA_ARGS__)
 
-typedef struct annotated_string {
+typedef struct {
 	struct mutex lock;
 	size_t len;
 	char *buf;

tictactoe_main.c

@@ -225,12 +225,7 @@ static int __init tictactoe_init(void)
 		tictactoe_error("failed to allocate game memory\n");
 		return -EFAULT;
 	}
-	ret = tictactoe_game_init(tictactoe_current_game);
+	tictactoe_game_init(tictactoe_current_game);
-	if (ret) {
-		mutex_unlock(&tictactoe_mutex_current_game);
-		tictactoe_error("failed to initialize game\n");
-		return -EFAULT;
-	}
 	mutex_unlock(&tictactoe_mutex_current_game);
 
 	ret = misc_register(&tictactoe_dev);