bcachefs: Fix error checking in bch2_fs_alloc()

One of the init calls had a ; instead of a ?:, and errors after that got
dropped - oops.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

fs/bcachefs/super.c

@@ -780,7 +780,7 @@ static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts)
 	    bch2_fs_btree_key_cache_init(&c->btree_key_cache) ?:
 	    bch2_fs_btree_iter_init(c) ?:
 	    bch2_fs_btree_interior_update_init(c) ?:
-	    bch2_fs_buckets_waiting_for_journal_init(c);
+	    bch2_fs_buckets_waiting_for_journal_init(c) ?:
 	    bch2_fs_subvolumes_init(c) ?:
 	    bch2_fs_io_init(c) ?:
 	    bch2_fs_encryption_init(c) ?: