mufs: do not write back in mufs_next_free_block()

source/fs/mufs/block.c

@@ -55,10 +55,6 @@ static size_t mufs_next_free_block(struct mufs *fs)
 		if ((index = next_clear_bit(data, bitlen)) != SIZE_MAX)
 			return (offset >> (ilog2(8) + ilog2(32))) + index;
 
-		if (flash_write(fs->dev, (1 << dev->log2_block_size) + offset, data,
-			len) == 0)
-			return SIZE_MAX;
-
 		offset += len;
 		nblocks -= bitlen;
 	}